|Robert G. McCreary|
Something very similar makes an appearance in Pathfinder Adventure Path #24: The Final Wish, by yours truly.
Spoilerified to keep things mysterious:
Room D13 in Xotani's Grave, the home of diamond-skinned Rajali, was completely inspired by the National Geographic article on that cave. Those pics are perfect visuals if your players are heading there!
|Crystal Frasier Contributor|