How do I get the jewel from the Idol's Maw?

Hint 1 of 7:

I assume you've tried CLIMBing the idol and GETting it?

Hint 2 of 7:

You may want to reread the description of the Idol's Maw.

Hint 3 of 7:

If it's like a seesaw, you need to get something heavy to weight down the
other end.

Hint 4 of 7:

Unfortunately, even putting all your equipment on the maw won't help.  You
need something big and heavy.

Hint 5 of 7:

Something that's in the Jungles of Miznia, and described in your "Legends and
Lore of Quendor".

Hint 6 of 7:

That Mother Hungus should do just fine.