The Caverns
The limestone in the caverns is more than 440 million years old. As water flowed from the surface through the limestone, it eroded the rock, giving way to more and more openings and crevices. Geological forces led to an “uplift” of the limestone.
The formations in the cave are stalagmites (a type of rock formation that forms from the ground up), and stalactites (formations that form from the top down and “hang” from the ceiling). The caverns are always changing and growing, ever so slowly. It can take anywhere from 35 to 150 years to grow 1 inch of new formation!
One of the most Instagrammed spots inside the caverns is Crystal Lake, a six-foot-deep pool of water. The rock below the lake isn’t as permeable as the rest of the ground, so water seeping down from the surface sticks around for a while!