A few things could have prevented this. One of the things I always do when starting a new character is read my notes. The area that has replaced Gehenna has all new descriptions. You walked three three new rooms and one of them has mobs there warning you of going further. If you made a copy of what you did wrong, you will see that 2 things should come to mind. 1) Look before you leap. 2) Perhaps I should learn about the new things I am seeing before I go forward. Is it a death trap? For a low level, most likely. Are there ways out, yes. I think that is enough about a new area that many have not ventured to yet.