The Devils hole. So its called ! A tributary of the River Medlock. At Park Bridge Iron works.

[@MartinZero]

The urban Legend UK Channel = kzbin.info/door/0yPaLwsmyWv_YS_37ys8fA Richie Wellocks Channel = kzbin.info/door/c5Z1U4mgHjyQdfM9_CvPZw Antonio's Channel = kzbin.info/door/HTI4lto4neeBw7kspelnGg

[@TheNapalmFTW]

Subscribed to Antonio's channel. Thanks Martin

[@RayFromTheHayclan]

I would guess they culverted it at a later date because of the pollution.

[@m.j.morshead]

Subbed all three channels.👍

[@kmkm3703]

Martin the music at the 19 min mark ... what is that from?

[@glynwatkins9968]

yo yo yo URBAN LEGEND ----- Will

[@crazyedits50]

Vitros was the trade name for the North Staffordshire Brick & Tile Co. Ltd. at Chesterton. Recorded in the Staffordshire Potteries Directory for 1868, this extensive works closed in the 1970's. They produced blue bricks, copings, pavers & plain roof tiles.

[@simontay4851]

Why did it close.

[@alanstone1206]

Just a bit more info, during the 50s and 60s the valley from Alexandra Park to the mill in Park Bridge was filled in as a town refuge dump, it took a few years so the converting was done as the tip advanced, I think the iron contamination is may be due to the many tin cans and other scrap metal in the tip and the changes in construction was in stages as the tip moved down the valley. It's now Snipe Clough Nature Reserve. Always interesting, thanks for your videos.

[@MartinZero]

Thanks very much Alan

[@davidbutterworth5258]

Hi Martin, I enjoyed your videos very much. Do you know anything about the Sheepwashes Brook culvert in Oldham? It used to go under the Snipe Clough tip, Cherry Valley, {closed and landscaped about 25 years ago). I say culvert, but on old maps, at the exit tunnel it is described as a storm tank storage facility, with an overflow weir. I remember going down the valley with a friend as a boy and we reached a large concrete fenced off tank, into which the contents of the main pipe were continually being discharged. It looked polluted and smelt strongly of effluent. The pipe/tunnel was about 9 or 10 feet in diameter and was continually discharging waste into the tank which was sub divided by 2 concrete platforms. In the middle of these the water was noisily being sucked down into, I presume, a subterranean drain and connected to the sewerage system. This storage tank may be seen on an old map dated about 1905, of which I have a copy.

[@darkstatehk]

I just love the side by sides. There's so much that used to be there that isn't today and there's tonnes of examples all over on these maps. ENDLESS FUN :)))

[@darreno9874]

Martin, you can't leave us in the lurch like that you have got to go back and get to the end, so interesting. God bless

[@mgman58]

I have just watched your video of park bridge tunnel. Devils hole. I have a little info for you regarding the corrugated sections. In the early eighties cherry valley was used as a landfill and sheepwashers brook was culverted along the section from near to Alexandra park all the way to park bridge section beyond Dingle terrace. Which is above the iron works/ cotton mill site. It took about 4 years to completely fill the valley. My mum lived on Alt estate and had to put up with the smells as they finished about 2 years after. The inspection covers that were installed along the pipe where you walked exploded and blew about 6 of them off due to the methane gas. In the 90s when I lived off warren lane which I had a view of the railway and what is left of the valley. They started construction of a 50mtr diameter settling tank on the valley this is about 75- + metres deep. If you had continued along the corrugated section where you turned back then you would have reached this holding tank. It was quite a sight when they were sinking the sections into the ground. The only thing you see now is vent pipes above ground. And the vented access covers all along the valley. But is is so overgrown that they will be difficult to find. When I was a kid I went through all of the tunnels and many a time had to swim out of them. Oh and in those days the medlock in that area was an open sewer. Full of all sorts. One time we had a half of a canoe mould and we canoed from near to the source at lees all the way to. Bardsley canal. At crime village took us 3 days. Keep up the good interesting. Videos I really enjoy them.

[@chazzyb8660]

I was expecting some sort of underground chamber at the far end, where James would be waiting supping tea and handing out the hob-nobs! As ever, glad you're doing it Martin - so I don't have to.

[@philburr4075]

Yeah Where's James with the brews

[@pilpelet100]

Martin! The places you go to learn about what goes on below ground and to bring us Sunday night entertainment! I don't know how you sleep at nights when you've been in places like this. Thanks to you and all the team.

[@marcbeebe]

How could you resist trying to follow that water course from above? With the old map and the number of risers looking for 'topside' clues would be another adventure!

[@telquad1953]

Someone had previously written "1/2 meter deep" across from the ladder. Good to prove that for one's self though... :)

[@moweron1]

Another great trip....please find the other end. Is it me? The area of tunnel where you examine the "VITROS" bricks looks as though it was built in two stages. The blocks used for the vertical walls look fuller and less dressed as those used on the roof. It looks like this section may have been covered over at a later date, as per you notes about someones' father working on the "Sheepwash"

[@gerrywoody4301]

Hello bud this one was worth waiting for. My wife has just told me that if she looks in on my den on sundays and she sees a mug of coffee and some chocky biscuits by the tv she waits till she hears" hullo I'm martin"then toddles of to leave me in peace

[@MartinZero]

Thanks Gerry. Mancave 😃

[@morlanius]

@29:20 All that area where you say you can't see anything, you can actually see it archeologically in the field markings and tree divides if you look. You can even see an effect where the map is very slightly distorted from about @27:40 moving the map a little south compared to the photo, this sometimes happened on old maps, it could be an angular effect from how the picture was taken or simply your cursor was a few pixels out initially and the error margin increased over distance from origin. Its really interesting, I have done some work myself with field markings and you can see most of the features you mention here in field marks even though the actual course is gone. In fact the path looks like its still there in some form. The iron oxide formations coming from the ceiling is a good indicator that its seeping though that way, it "could" be that dumps from the iron works over time has leeched out into the water table and that is what you are seeing, just a thought.

[@anneforster510]

Had to put off watching this Martin as every time I sat down to view I was eating 🤢🤢 got there in the end ✔

[@TheCelts01]

We have been missing u for a few weeks Martin. Nice to see ya again mate. Your Nr1 Fan Deano from Hamburg Germany

[@gmr1241]

At 21.23, look to the left on the wall of the stinky sump. Says: "Half a meter deep". Still - wise to use the stick! OK, now I'm gonna watch the rest.

[@simonmcowan6874]

That was so so good Martin, an excellent group of like minded people, safety in numbers too, I wonder where it would have come out if you'd had the opportunity to carry on.

[@whoshotdk]

It's fascinating that you can still see the crease in the land where the river was culverted. Unless my eyes are deceiving me!

[@crazyfvck]

@whoshotdk I noticed that too, at least in a few spots.

[@nickcaunt750]

Great stuff again! I watched your pervious video at Park Bridge and it inspired me to add the area onto an explore of the Hollinwood Canal (in Daisy Nook) that I already had planned. I added the two together and it became a 10.64 mile walk that I did on Friday. PS the canal is also well worth exploring. In the last shot when you walk away from the smelly sump (about 21:18 mins) someone has painted 1/2 mtr deep on the left (east) wall, which you confirmed with your wade through. If there's a way of mapping the distances (I assume GPS doesn't work, but I don't do tunnels myself) I think you will find that the corrugated sections were put in last and filled the open sections shown in the side by side old map. It certainly looks like that would fit. These would have just needed to be placed in the stream bed and then covered over. Plenty of spare spoil around there! Regarding the odd bricks in the upper stone section. I think these would have been construction holes for the wooden tooling to fabricate the arched roof. There is also evidence of a narrow ledge just above their level where I think a horizontal (lateral) timber for the arch tools would have been placed and slid along.

[@nedkelly4999]

When are you going back to park bridge, we need to see where that tunnel comes out.

[@winniegeo]

Those s were awesome photos near the end of the tunnel admire the stamina it took for navigation. Five thumbs up!!,

[@irwellfishing]

at 33:40 and just before the amount of baby wipes etc suggest a sewer main does connect there somewhere, which would be an illegal discharge from UU somewhere

[@markthomas6045]

Excellent explore Martin! The way you linked the cursor on the maps was brilliant, that, and the old stone tunnels themselves brought history to life! Thank You!

[@MartinZero]

Thanks very much Mark

[@soundgroundermusic]

Fascinating, mate. The photography was dramatic. Always boggles the mind to think that every piece of stone or brick would have been laid by hand of the hands of souls long gone. But there would have been a great communal spirit between those men and we have a rare glimpse of their toils of labour that continue to benefit everyone in the area a today. This is thanks to yourselves and the team you worked with today.

[@MartinZero]

I would love to go back and see how it was done

[@silurian9420]

There was once a railway signal box just south of Oldham Clegg St station named Sheepwashers Lane, on the same line that crossed the demolished viaduct.

[@MartinZero]

Be good to find an old pic of that

[@markheywood5626]

In the woods not far from that last tunnel is a memorial stone for the girl who was murdered. I came across it while walking in the woods a few years ago. It's hard to find as I have walked those woods for many years and only came across it a few years ago for 1st time.

[@MrRiverspider]

Your gas meter didn't pick up the helium lol loved some of the older tunnel, 🥰

[@gs425]

That's what I was thinking, bless him.

[@peteemery9901]

I used to play in Cherry Valley as a child. It was an open water coarse that often had sewage released into it every few weeks. We payed on the valley sides and down in the river for years. Long after the trains stopped running it was still a great place to play,all between the playing fields by Alexandra Park all down to Park Bridge. The council have totally filled in the valley which is why and how you have so many different types of brickwork,corrigation I suspect. Where you went right to set off,just to the left of the arches was another drain channel all the kids called Sally's hole...now collapsed.

[@Simon_Nonymous]

At some points this was like watching Alien... nice one Martin and Team. And you're no soft arse - you faced up to, and overcame your fears.

[@raybeaumont7670]

My great grandfather worked in the rolling mill at Park Bridge. My mother would take his lunch, from Glodwick, when she only attended school in the mornings (half day). She was a cotton weaver in various mills in Oldham and wove parachute silk during WWII. I remember Park Bridge as a Sunday afternoon stroll when I was a kid - bloody long time ago. Thanks for the video Martin - very interesting.

[@Dug-UK]

It was always called devils hole when I was a kid it comes out in the valley to the rear of dingle terrace at a weir , to the left of that was Sally’s hole which ran under the hill and also came out in the valley behind Dingle terrace, the entrance to Sally’s hole was covered in ages ago . There is a modern tunnel thar runs all the way to Honeywell lane near Alexandra park this was built under the tip I remember going in as a kid and it had a mini train in it

[@RedWolf1989]

Where does it end? Or maybe better, as you followed it upstream: Where does it begin? Obviously it can't go on forever, so there must be some kind of beginning, but I can't imagine how that could look like. Does it get narrower and narrower until it's impossible to follow? Does it start in a gigantic chamber with pipes leading into it from all directions? Or is there simply a brick wall forming a dead end?

[@mikekielecher.7171]

This was known as devils hole in the mid 50s and you couldn't access it because of a weir but Sallys hole was easily accessed and we used to go through it quite often. The source of the brook emerged from under the council tip and was a sewer. I lived on Fitton hill estate and this was our playground.

[@mickyg1953]

I lived on Abbeyhills Road and we used to play down there too. I remember the sewer outlet from under the tip.

[@stevesealey6312]

Thank you guys really enjoyed seeing what is near me 👍

[@eopaie023]

Very picturesque culvert. Also a criminally underrated one.

[@nedseagoon5101]

Dunno why, but getting the vibe on this one that you were peed off & didn’t really want to be there! Still fascinating as ever.

[@anthonys555]

I think he was missing James

[@josedasilva8924]

Yes!! I was thinking the same as I watched the video.

[@jamesmihalcik1310]

Wonderful footage of a very intriguing tunnel ! That looks to get some really heavy "flash flow" due to how clean the beds are. You are pretty deep for the lack of roots. Extremely well constructed, what a treasure ! I did miss seeing James, but all the gents solid and knowledgeable. Many thanks for taking us along :)

[@lindamccaughey6669]

Well Martin that was one daggy tunnel. Loved the brick and stone parts. Thanks for the history I really love it. Thanks so much for taking me along. Please stay safe and take care

[@Merescat]

Would love to see where those hatches came out on the map. Would give a good perspective of the distances and layout of the water course.

[@NeneExists]

I'm wondering if the eventual place that whole series of tunnel comes from is a pool at 53.5263, -2.0935 It's got a fair amount of branches and other debris, which might explain what was found in the tunnel

[@radio-ged4626]

What a challange! Very absorbing to watch. Guess I'm hooked now.

[@blueneeson9888]

Thank You So Much Martin And Your Brilliant Team. The Hole Lot Was A Absolutely Fantastic Video. Please Stay Safe. From Blue.

[@dunc1958]

Very interesting video Martin and most enlightening. The part where you went through the tunnel that ran parrallel to the short row of houses (Dingle Terrace) is where the underground pumping station is located where I delivered and placed submersible electric pumps. I was told it was to control the run off from the land above. The reason the pumps were changed fairly often was because of the iron oxide build up, we knew this as 'leachate' and when it dries out it sets rock hard and is difficult to remove. The passageways in the pumping station must be linked to the tunnels you went through. At the time I went there it was overseen by the Greater Manchester waste group, now no longer in existance I always went in with the 'gas crew' a fine bunch of lads.

[@MartinZero]

Hmm that sounds very interesting Duncan

[@dunc1958]

@@MartinZero I have a couple of pictures of the pumps and my wagon lowering them down the access hatch, If I can root them out I'll email them to you

[@dunc1958]

@Richie Wellock that's probably it, I was told it was to handle the run off from an old landfill site, I went to various sites around manchester all with methane sripping plants. some had burners and some ran generator systems off the methane.removed

[@OkenWS]

@@dunc1958 All this talk of the landfill sites has got me wondering if the infiltration leachate into the tunnel is also contaminating the watercourse with landfill runoff. Perhaps that explains the smelly powder which 'stunk' but was neither H2S nor methane.

[@simonholliday9874]

Sunday evening. Martin. Medlockery. Yes! "Now I want you to look at...." says Martin, prior to filling in the history in the manner of an excellent teacher. My favourite academic study at school was social, economic and industrial history because our teacher brought it to life. We felt we were at the mill, living on a pittance, or marching from Jarrow. I love it still. Martin's presentation reels you in in the say way Mrs James did. Thanks from a big fan.

[@MartinZero]

Thank you Simon much appreciated

[@Peter-nv3wu]

One of the things that make your video's so interesting Martin, is the fact that you always share the history of the places you go with us. Obviously the research takes a great deal of time and effort but it is very much appreciated by myself, and other people who follow you I am certain. Just wanted to say that you have taken some amazing photo's on your trek through the culvert, well done Martin !

[@MartinZero]

Thanks very much Peter, yeah they are great places for photos

[@shirleylynch7529]

Wow you are some brave explorer. Your name will go down in history that’s for sure. Fabulous filming, footage, atmospheric music. Loved it. So good. Thank you for sharing that explore with us.

[@MartinZero]

Thank you very much Shirley

[@susanlampshire639]

Martin Zero….the hero that goes down horrible holes…..so that YOU don’t have to!! Thanks Martin 🤪

[@stillcrass]

Brilliant.

[@ColinBenbow]

Interesting to see Park Bridge today as a young teenager in 1950's we ride along the Hollinwood/Bardsley canal to Park bridge. There we would watch them rolling iron into rods. I am not sure if the cotton mill still operated growing up in Droylsden seeing cotton mills was not that interesting but iron rolling was awesome. I worked at Buckton vale print works and this had many tunnels carrying effluent and fresh water for dyeing underneath the valley

[@jimmyviaductophilelawley5587]

Great stuff Martin every time you deliver interesting history in full context best wishes and take care

[@danielbarrows7144]

Very cool video Martin! The chamber with the sump in it had 1/2 meter deep marked on the wall. The tunnel was very interesting especially the dark brick and the stone parts!

[@MartinZero]

Thanks Daniel. Yeah but we couldnt trust that marking had to double check. Not going neck deep 😆

[@cavey.thomas]

Great video. If you look on the map you showed, at one point it shows some tennis courts. this is the area we called 5 hills as kids. Just down the hill from there was a massive open sewer that was covered up by the landfill. If you want any information about this area in the early 70s just ask. It was my playground.

[@the_retag]

Massive open sewer covered by landfill... just what you love next to your river

[@rogerbeck3018]

your side by side (map/aerial photo) view (with synchronised cursors) was brilliant - many thanks

[@nyctomanica]

Nanny Lynn in the background music!

[@MartinZero]

Am very impressed Ellie 👌

[@paulambrose1]

Wall marked 1/2 metre at sump if ye didn't see it. It may be an indication of the depth . Thanks Martin, great videos.

[@philburr4075]

Great video Martin, especially the bit about sheep washers Brook and the account from a guy who helped build it.

[@mrsbuki]

Enjoyed watching. Your still photography is stunning

[@MartinZero]

Thank you

[@garethparr9482]

Great Martin. The medlock the river that just keeps on giving

[@MartinZero]

It certainly does Gareth

[@grimern69]

Martin, I was rivited to the last two videos. I used to live close to Park bridge. I have learned so much. Dont forget to do the rest of the river medlock you may be able to explain more at the bottom of Glodwick Lows and the ford.

[@aniwilliams3370]

Absolutely amazing as always, and the still shots are fantastic. Glad to see you had your hard hat on again ... you've been giving me the heebee-jeebees on some of your more recent vids! :o) Brilliant as always and I'll look forward to seeing any research your turn up as to what it was.

[@patrickmccarthy5462]

That corrugated section was really trippy!

[@pambromley7481]

Martin, you deserve an honorary degree for the stuff you. Very interesting and original.

[@glennwright2197]

park bridge was my play area as a nipper martin.i take my grandson now and he finds it a fab place.my mate used to live in a stone cottage over the bridge at fairbottom bobs.

[@ianhudson2193]

Yet more amazing history ......😯 I'm having trouble playing catch up on all this.....👍👍👍

[@ardcapture3D]

21:18 Someone kindly wrote 1/2 mtr deep on the wall! Great video Martin.

[@markcantemail8018]

Thanks Gang for the Explore . Martin that was sweet at 15 mins where You got to see what your Dad was talking about . He might have been down where You walked ?

[@MartinZero]

Oh sorry Mark that was an account written in a forum by someone else

[@roosalwaysthesun8759]

Well Martin, to be honest I loved this tunnel. Especially because of its age and history, really exciting and awesome to see, I really want to thank you all for that, I thought it was super cool. Beautiful colors and shapes of the water and other fabrics can make, with time, loved it thank you so much. Love Roos 🙋🏻‍♀️🤩💪🏻🤗🌹

[@MartinZero]

Thanks Roos. Hope your well

[@roosalwaysthesun8759]

@@MartinZero Thank you, When I see you Martin, I'm always fine 🙋🏻‍♀️🤗👍🏻

[@roosalwaysthesun8759]

@@MartinZero Martin I would like to know how you are still thinking about you when you said it wasn't okay 🤨

[@andrewfound3269]

Smashed it Martin great informative video with 3 urban explorers Thanks Dorset Andy keep the faith🐝

[@PracticalCat]

That sump was curious. Did you notice water was entering from one side but not exiting the other? Does it have an outlet underneath? Maby a sewer interceptor? Also I noticed it said 1/2 meter deep in the wall.

[@mrlister2000]

I noticed the writing on the wall but was curious as to where the water was going!

[@TheMattc999]

That's a scary thought if it does have an outlet at the bottom. That could lead to a truly dangerous situation. Also, there at the 5:10 mark, was that water just dripping from somewhere up above, or was it actually raining? I love exploring places like this myself, but if they went in in the rain they have got waaaaay bigger man-bits than myself.... Anyway, awesome video. Unfortunately where I'm at now I've only got 2 really decent tunnels to explore, but I do believe I may have just found number 3 yesterday, and I do know of one more if the entrance ever becomes unsealed, or if I can find I secondary access. Oh well, at least I've got this to watch until I can go on my next mission. 👍✌️

[@andykillsu]

There was most likely a pipe on the sidewall somewhere. That looks like a sewer overflow area. So under normal conditions all the storm water would go into the sewer, but if during heavy flood/rain, the water level for too high, it would start flowing down the culvert into the medlock.

[@bryan3550]

Yep, the water was flowing out somehow, but it wouldn't be going downward: such an exit would get covered in debris and block. Must be flowing out sideways. Would have been good for someone to take samples for Chem. analysis!

[@PracticalCat]

@@TheMattc999 Yep never go in drains when its raining. Its a great vid but pretty irresponsible imo.

[@auser1484]

Never tire of this content and it's always done so well. For some reason KZbin didn't notify me about this video...I really don't like it when that happens. :(

[@cargumdeu]

nice filming, quite a trippy film set, and we love your attention to detail.

[@MajorTomgames]

used to go in there as kids, called it sally's hole for some reason

[@Bystander333]

Loved the post from the guy whose father did a load of work on culverts in the 1930s. That's the kind of info that ends up pretty much word of mouth despite our best efforts to record what stuff is where and why we put it there. Also Antonio is cool and how the hell did they get the corrugated sections in there.

[@nickcaunt750]

Martin Zero If there's a way of mapping the distances (I assume GPS doesn't work, but I don't do tunnels myself) I think you will find that the corrugated sections were put in last and filled the open sections shown in the side by side old map. It certainly looks like that would fit. These would have just needed to be placed in the stream bed and then covered over. Plenty of spare spoil around there!

[@crazyfvck]

@@nickcaunt750 That makes sense, but the big question is why? I understand putting small brooks and streams into culverts when an area was being industrialized, but not these days. It looks like mostly farm fields and some wooded areas around there. Maybe they just did that to try and keep people from going into the older sections of the culvert?

[@davidwood3601]

crazyfvck It looks like the site was used as landfill during the 1980s. Deanshut Clough, Dingle Terrace, Ashton-Under-Lyne, Tameside OL6 8AH is listed as a former landfill site sold off by Greater Manchester Waste Disposal Authority in December 2012 to a company called Landcare.

[@nickcaunt750]

@@davidwood3601 I was in the area last Friday. Dingle Terrace is at the top of Park Bridge village, right beside (east) of the area that is probably landfill. It certainly looks so on the aerial maps. I actually walked down to the river where Martin accessed the riverbank. He makes it look so easy. It was slippery as hell after a shower when I did it. Anyway, I walked past the entrance to Sally's Hole (which is shown at the end of the video). I think the wire grill was no longer bent. I ascended the steep bank right up to the top. and continued my walk. That area was almost certainly former landfill, it looks the same on aerial maps. The two spots are essentially side by side. There would be plenty of landfill after demolishing the works!

[@charlottemarceau8062]

Woah.. that last bit.. a-MAZING !

[@MartinZero]

Cheers Charlotte

[@katherinekinnaird4408]

Thank you Martin and friends. It's all very interesting.

[@MartinZero]

Thank you Katherine

[@debbiepitcher9806]

Fantastic again, boy you just get better and better Martin A* For you.

[@morgan7734]

Another great video, nice one Martin.

[@stevesrepairs5778]

Thanks Martin that was fantastic. Take care and all the best. Stevie

[@johnathanrowley2707]

Another great video showing some unexplored and off the beaten track history

[@MartinZero]

Thanks Johnathan

[@richardjellis9186]

I understand how hard it is to figure out what the weather is going to do round our area, even on a lovely summer day, but you really do need to plan better and take less chances with these kinds of explores in future bud. We want lots more videos. Not just one last VERY WET ONE.!🥺🤣! BE CAREFUL OUT THERE MART.

[@graemehannam3950]

Another excellent video Martin thanks, must take some guts to go In those culverts and tunnels, a braver man than I am, please keep your vlogs coming and stay safe Martin, looking forward to your next vlog

[@MartinZero]

I must admit Graeme that first part of the culvert was a complete arse to walk but it got better. Thank you

[@nikbennett4894]

Loved it, Martin. I’m a big sky man. I’ve been down the Blue Johns and that was enough for me! Glad you’re doing it so I don’t have to.

[@MartinZero]

Thanks Nik. Ive never actually been down Blue John

[@goldenaxe1986]

Fantastic video Martin shame you couldn't venture deeper . it would of been very interesting. I especially like the silhouette picture of Richie Wellock at 34:01

[@willp358]

Really enjoyable, informative with the usual hint of humour and trepidation. Thanks...

[@ColinHarperSummerson]

Excellent video Martin, very informative and theorizing too, which is what i like , you do a great job Martin, thanks 👍🙂

[@Yonner666]

The rivets for the Titanic and Eifle Tower were made at Park Bridge. The old steam engine from the mine is at the Ford Museum in America.

[@TheJimmythecorkscrew]

Very interesting to see this Martin. Amazing amount of labour and industrial history.

[@FlightProgramAborted]

A great watch as always Martin. When you pointed out the filter beds on the left, on the right aerial map it looked like the the grass had a reddy tinge to it 👍

[@MartinZero]

Yeah it did Mike. I wonder when they went out of action

[@FlightProgramAborted]

@@MartinZero there is quite an interesting article on filter beds, this ones quite good as it has pictures :) www2.groundstability.com/saltburn-gill-mine-water-treatment-scheme/ From what I gather though, the old way of doing it was to have natural reed beds which captures the iron particles, which would then have to be back washed periodically . I dont pretend to understand the how the flows work but it seems to me that they could have potential;y just filled them in allowing for saturated or broken reed beds to ooze iron over time, which is maybe what’s happened there. Just when you turned back, the leakage coming through the stone cracks seemed quite clean, I wonder if you had made it past the Filter bed area if the water would have cleaned up, or maybe the flow from the flooded mines is still running

[@matthewgriffiths8423]

Great video Martin. I was expecting any minute that you heard organ music and came face to face with the phantom of the opera lol

[@MartinZero]

We did, you missed that bit 👍

[@matthewgriffiths8423]

Ohhh no lol 😳

[@KidCurry666]

Great video Martin, possibly my fave so far this year 👍👍

[@matthewrail6065]

Another great video Martin

[@chriscoalbran1829]

Martin you and your mates know where to find them great vlog really enjoyed it keep it up.

[@markphillips2076]

Interesting video Martin, thanks for going in and sticking with it. Makes you wonder what the need was to culvert under fields. And so deep underground. Corrugated iron concrete works I tend to associate with wartime. Plenty of pill boxes built the same way but horizontal obviously.

[@MartinZero]

I agree Mark, why on earth would you culvert under fields

[@lairdstephenrousek.r.o.6505]

Very good that, very interesting work. We have a few in skipton, we used to play in as a kid.

[@glenntanner3]

great photos, thank you for including them

[@anarchodandyist]

Great vid Martin. Antonio has a manc twang to his accent. R kid ha

[@MartinZero]

You reckon ?

[@anarchodandyist]

@@MartinZero A little bit aye.

[@goodlookinouthomie1757]

This is such an interesting channel. Imagine there must be hundreds of places like this all over the UK from a bygone time - history right under our noses.

[@MartinZero]

Yeah I reckon there is and thank you

[@andyhill242]

Thank you for taking us on this interesting exploration Martin, I hope you will make a future video of Sally's hole. Looks a bit easier than today's culvert.

[@MartinZero]

Thanks Andy. Yes I think it needs looking at

[@whiskeycook3323]

Outstanding adventure and video. Glad you took professionals with you for your safety

[@MartinZero]

Thank you Marie