The tunnel abruptly opens into a vast open-air cave here. It looks out

upon a brilliant yellow desert, the sunlight reflecting off the dunes

nearly blinding in its radiance. The outer edge of the cavern drops

straight down, a dizzying thousand foot drop for anyone unlucky

enough to step off. Hot winds from the desert blow into the cave,

their dryness almost withering. Shapes in the sandy floor indicate

that some immense creature makes its home here.