STR for Mining Cave Walls

[WhiteWhale]

So my friend and I have been living it up as a hermit duo, and we have secured ourselves a cave. So I was wondering what STR will we need to start mining the walls of the cave? I know probably no one here knows the exact for this, so any help like when you were first able to mine walls away, or what you currently are at if you can mine them.

[Grog]

for some tiles you can start with str10 and a q10 stoneaxe. for other tiles you need >200str with a pickaxe >q20 (just as plain examples)

so just test, the strengh of the cavewalls differ, it could be hard in the beginning and easy deeper into the cave