Kartchner Caverns State Park in Benson, AZ, is a live cave that hosts a wide variety of unique minerals and formations.
Reviews landforms caused by groundwater erosion of rock.
Features and minerals found in a limestone cave in New Mexico.
Sinkholes can occur in almost any type of rock but are most common in limestone and other karst toporaphy. People and property have been swallowed by sinkholes.