Black Mesa State Park is an Oklahoma state park in Cimarron County, near the western border of the Oklahoma panhandle and New Mexico.

The park is located about 15 miles (24 km) away from its namesake, Black Mesa, the highest point in Oklahoma (4,973 feet (1,516 m) above sea level).

The mesa was named for the layer of black lava rock that coats it.

Lake Carl Etling, also called Carl Etling Lake, was formed in 1959 by a dam built on South Carrizo Creek and is contained within Black Mesa State Park.

It has a surface area of 159 acres,[5] a shoreline of 5 miles (8.0 km), and an average depth of 11 feet (3.4 m), with a maximum depth of 38 feet (12 m).