Lava Caves

Pop quiz: What happens when you have a cave system so big and so deep that it taps into a magma chamber?
You guessed it! You get a lava chamber!
This is a cavern in the same system as the cave of whispers. Yes, the caverns are that big. The natives use it for sacred rituals and sacrifice....
Wait. Who are these natives? What are they doing down here?
Rendered in Photoshop, Photo taken at Carlsbad Caverns