Pit is located in Southwestern Montana near the city of Butte.
It is within the Butte Mining District in the upper Silverbow Creek drainage. The total depth of the pit from the bottom to the highest rim is 1,780 ft. Pit began in 1955 and was discontinued in 1982. When the mining stopped, dewatering was no longer necessary, and the deep level pumps were shut down. This allowed the groundwater to rise toward its natural, pre-mining levels.