the wall switch. turn around and shoot a dog. exit this room and run to the south-west corner and enter the open gate. enter the room and pull down the wall switch. exit this room and run to the north-west corner and enter the open gate. enter the room and pull down the wall switch. exit this room and run to the middle of the east wall. climb the blocks and see the open door.
go east and slide down the slope. jump onto a block in a lava lake. run and jump to grab the next column. pull up and run and jump to the next column. pull up onto 