ToME: the Tales of Maj'Eyal

There is a vault full of lava and dragons, that has walls that must be digged. The problem is that it is impossible to dig on lava, unless you have fire immunity (or an archmage 'dig' spell). As you take damage, the digging process is immedialtely stopped and cannot be achieved. Even with a damage shield, you take 0 damage, but it is sufficient to stop the digging.... Very frustating, indeed.

Either lava vaults should not require digging, or digging should be made possible on lava.

I'm of the personal opinion that no vaults should require digging.

Radical solution, but I agree.
Having to mouseover the walls just to find which tiles are digable is uselessly boring.

For what it's worth, in the vault of which you speak, there is a single space of non lava in front of each diggable wall.

Maybe. I am in the High Peak and I cannot go down to verify.
I will double check next time.