Or you can check my walkthrough called Stackman's Adventures. Check out the link
here. Just look for the "Boogre Caves" in the dungeon list and you will find the links to the three chapters dealing with that dungeon.
But really you do not need a walkthrough. Now that you have been able to get back to a spot where the gate does not hinder you. Now that you have the evil eye, walk back to the prison section. Next to the room with the prison cells lies a room where the receptacle for the evil eye is. Once you have completed that room you can walk back to S'Keser Da's room and exit the caves from there.