The Mammoth Hot Springs of Yellowstone National Park in Wyoming.
Chihuahuan Desert in New Mexico is Carlsbad
Caverns National Park, a series of more than 119 caves that were formed
from sulfuric acid that dissolved its surrounding limestone to create a
fascinating underground world.
The Hamilton Pool Nature Preserve in Dripping Springs, Texas, features a jade green pool fed by waterfall flows.
The Fly Geyser is a rainbow-colored geological
wonder on the edge of Black Rock Desert Nevada that was created through
accidental well drilling. The geyser is known for its stunning changing
colors.
Deep inside a mountain in east Tennessee is the
Lost Sea, America’s largest underground lake. Stretching more than four
acres in size, the lake is part of a cave system called Craighead
Caverns.
