In 2022, it was the International Year of Caves and Karst. These hidden worlds contain unique ecosystems. The International Year of Caves and Karst was established by a number of organizations to shine a light on the importance of caves and karst. Karst forms when soluble bedrock is dissolved by water. It starts with existing fractures and cracks in the bedrock, which become enlarged through dissolution. Given enough time, large subterranean drainage networks can develop, connecting the surface with the subsurface.
Rainwater picks up carbon dioxide from the air, and as it makes its way through the soil, it turns into weak carbonic acid. This slowly dissolves limestone, dolomite, and other types of soluble rocks along the joints, bedding planes, and fractures, which over time become enlarged enough to form caves.
This cave can be viewed from a pull-off along the road below, a few hundred meters away. It is even better seen with binoculars or a zoom lens. At parts of the year, I can see mountain goats on the slope of the mountain that this cave is part of, sometimes grazing or hanging out in front of it. On this occasion, there were six of them. I noticed one standing right away, but when I zoomed in, I could see two sitting at the entrance and three on the rocks just below. Mountain goats' habitat makes up an interesting geological world.