Like the most of Dungeon and Dragon players - I`m always searching for hidden content / quests / rooms and other things, so I can feel rewarded. This happen to me during 'the Chasm'.
Its exacltly here : [Hi-Res pic is for the programmers to get in there and fix that (reward or deleting this 'glitch') - red marker is last screen position]
Looks like there are stairways made from fallen part of this fort - look at that screen.
Finally jumped on the very first step (which took me some time), right after this was easy - just jumping on higher parts of wall. So I finally done it :
And what? I get rewarded with INVISIBLE WALL.
I am fool creature. Hoping I will be epicly rewarded with awesome hidden quest or at least a stash to open. And I get this invisible wall instead. Awesome.
Btw. I got an idea - write on the wall 'you shall not pass', lawl.