Speleothems - Gypsum Features
Gypsum crystals are common in some of the dryer parts of the cave. Gypsum, a mineral containing both calcium and sulfur, sometimes takes the form of needle-like crystals that radiate from clusters on the floor of the cave; in other cases, gypsum resembles puffs of cotton, or forms clusters of curved or coiled crystals called gypsum flowers.
Did You Know?
Lewis and Clark, while on their journey up the Missouri River in 1804, noted that this "wild dog of the prairie...appears here in infinite numbers." More...