I am unable to get to the key for the locked chest in the secret room that you get the explosives from. I can see where the key is, its in a cell with a skeleton smashed against the door and I can't find any way to enter that room. Here are some screenshots for the room and map that I am trying to enter to get the key which you can see on the picture as well:


http://img821.imageshack.us/img821/829/blockeddoor1.jpg

Map of the location:
http://img258.imageshack.us/img258/8509/blockeddoor.jpg

On the map it looks like you can enter that room by going through the secret passage but there is a wall with the switch that opens up the secret passage to the explosives next to it.