Exploring Tokyo's Underground Cable Tunnels

Underneath Tokyo’s bustling metropolis lies a maze of concrete tunnels built by Nippon Telegraph and Telephone Corporation to hold telephone and Internet cables. Photo: Alexander Martin/The Wall Street Journal
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[@jzk2020]

That's actually pretty smart. You can build those tunnel for multipurpose uses, that way you can share the cost of building them and maintaining them. Broadband companies, gas companies, electricity companies, even garbage collection companies and water treatment companies can split the cost and benefit from these tunnels.

[@MercenaryBlackWaterz]

Perfect setting for a survival horror game...

[@remusstop-motion2796]

The Backrooms...

[@26TptCoy]

Very good. Sydney and Melbourne also have cable tunnels also for Telco cables. Some parts in Sydney the tunnels are over 100 years old and oddly enough they carried open wire which was secured to arch bars with insulators.. Sadly people cannot access because they are considered confined space and are locked with very high security.