Some amazing crystals
These are some selenite crystals -- a form of gypsum.
Look at the picture and see the man at the left for a sense of the scale.
Saw this at
Maggie's Farm
More images here:
The Cellar
Parent site of the Naica cave system with video and galleries:
Naica Caves
Conditions in there are a wee bit harsh -- from 125 to 150 degrees F (50-65 degrees C) and stays at 100% humidity. You can stay in there for about eight minutes without protective gear.
Posted by DaveH at April 3, 2007 9:00 PM