Directly above the spring is a large natural opening, which was originally the only entrance to the crater.
Those who wished to soak in the mineral-rich warm waters had to rappel through the hole at the top.
The heated water returned to the surface and deposited that material as travertine.
Today, the mineral-rich water is piped out of the crater so that the dome no longer grows.
Even from the bottom, divers can see clouds in the sky through the hole at the top.
Now part of the Homestead Resort, the Caldera is the largest mineral dome in the area.
It is approximately 55 feet high and 400 feet across on the outside.
The inside chamber is 85 feet across.
The water in the crater is pretty deep too about 65 feet.
It is currently the only warm-water scuba diving site in the continental United States.
Photo credit: Andy Jenkins/Park City Yoga
Photo credit:www.sunplay.com
Sources:Wikipedia/www.go-utah.com/universe.byu.edu
