Dragon Caves

I've really enjoyed this expansion, but I'm stuck in the dragon caves. I've hit two switches to remove two "holes", but I can't get any further. No idea where to find the dragon claw lockpick either.
Is there anything in the barrel behind the skulls in the pit room that I need?

Can you upload a map?
The lockpick is in a vase further inside.
There's a casket of jewels for Soon Gonn in Chu-chih City in that barrel.

As you can see, I'm not too far...

There are multiple entrances. When you climb the mountain from a rock with Bird's Wings and a Rope in the Abode of Dragons, the ledge you land on is random. There are 3 different areas you can get to with that rock. I'll leave you with that for now. Are you hitting the switches in Dragon Caves with your weapon? Do so.

Sorry to be a pest! I've hit the switches with my weapon, I've visited all three parts and have cleared the maze and abode of agony. There is one entrance (which I can't enter) that is "guarded" by a dragon on one of the mountains.

I've looked everywhere for entrances and I'm still stuck. I must be missing something incredibly obvious.