If you travel roped without any protection, its typically for glacier travel. Glacier terrain isn't usually that steep or exposed so if someone, usually the leader, falls into a crevasse, the other members will automatically drop into self arrest to stop the slide. Self arrest + rope friction is enough to stop a crevasse fall. For anything that is steep, has exposure, and is technical, they would climb with protection i.e. ice screws, rock pro, etc. Typically they would build an anchor and someone would lead on belay while placing protection until they finish the pitch and build another anchor. They would then belay the remaining person up as they remove the protection. And putting the rope away takes a long time so sometimes it is most convenient to stay roped up between sections where it really is necessary.

@@incorporeal9044 Much appreciated

What the other guy said. When climbing with ice axes and crampons, its likely everyone can self arrest and save the falling member.

Yes

Isch halt a rechta Pappschnee🤷🏻‍♂️

Der Schnee ist glaub ich auch Teil eines Gletschers.

Und pappt so gut dass sich die Verrückten mit bloss Frontzacken und Pickelspitze drin festhalten können