Cross-section of Calcite Crystal Covering in Jewel Cave
Detailed Description
Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.
A cross-sectional view of the crystal coating can be seen in the center of the image, with the surface of the calcite crystals at the top of the image.
Sources/Usage
Public Domain.