Digging with supernatural strength

[Mouser13]

My party has gotten themselves trapped underground in a collapse level. Most if not all have supernatural strength. the party has separated them selves into 3 small groups.


Wondering how long thing should take them to dig themselves out and possibly together as their 80-90 feet apart from one group about 50ft apart from the other.

breathing not a issue or food as they protected themselves from that before entering. They are down about 3000ft weight is somewhat a issue. Continually collapse could be a problem too.