Lost Mine Peak is a 7,547-foot-elevation (2,300-meter) summit in Brewster County, Texas, United States.

Lost Mine Peak is located in Big Bend National Park and the Chisos Mountains.

The mountain's toponym has been officially adopted by the United States Board on Geographic Names.

[3] The peak's name comes from a legend of Spanish explorers finding silver here and enslaving local people to mine it.

According to legend, the workers eventually rebelled, killed their enslavers, then sealed the entrance to prevent further exploitation.