Im in the caves of madness and have gotten the necklace that you get when you put the blocks into the wall. I have no idea where to get the other necklace. There is a block left in the room where I put the other blocks into the wall to get the necklace and it appears there is an upper level there and I cannot reach it even if I move the block, get on it and jump for it. I have also went back up the wall I have to climb to put the necklace in and pulled a lever. I have no idea what to do now. It seems as if I have done everything I can.