This natural feature was created in a similar manner to glass mountain, but in reverse. Groundwater dissolved a buried gypsum plug and left behind a massive crater in the earth. Over the years, the edges have collapsed, but the whole that remains is nonetheless, impressive. It is 50 feet in diameter and over 200 feet deep. Be careful not to get too close to the gypsum sinkhole. The rocks along the edge are soft, unstable, and prone to collapse.
*Accessed via Cathedral Rd. - Turn onto Gypsum Sinkhole Rd.