You can leave the temple by following the path. In the room with the long fall with the water at the end, you can follow right, go through the doorway (into the backwall). If you follow that path you will get back to the lower temple levels. From there you can leave the temple the way you came in. ^^
if i can get a visual of that but if not and i am in the right spot the doorway goes to another part and the exit/entrance to that level to get to the doorway is blocked off
i have the same problem and if i go to the room with the gem in a small room there is a wall in the way and i have no idea where the button or something for the wall is
