10 Astonishing Cave Formations
10Cave Bacon One of the most common and beautiful cave formations is cave drapery. It forms when water saturated with calcite clings to a sloping ceiling—held there by surface tension—and rolls slowly downward. As it rolls, carbon dioxide is lost to the atmosphere, and the solution becomes supersaturated with calcite, which then hardens into a thin trail. Proceeding droplets follow that same trail, depositing another layer atop it. Eventually, they form delicate, thin sheets of calcite that look like drapes hanging from the ceiling....