I just finished this mission in Expert with almost* the whole loot. I am fairly sure I explored MOST of the map, but still I did not find how to reach the second exit.

With second exit I mean the window-like hole you see in the very beginning. When you start the mission you have to swim in a submerged passage to enter the mines. But in the initial area you also see this second hole in the top right.

It is impossible to reach from the bottom, but it looks like a possible exit. Do anyone look how to arrive there?


* I think I skipped the pricey hammer on the stone desk where a unarmed civilian and magician priest are talking... not worth the effort.

you just have to get off the lift at the correct moment.

Found! Thanks!