Thunder Mountain Gold, Inc. explores for and develops mining properties in Nevada and Idaho, the United States. It explores for zinc, silver, gold, and copper deposits, as well as base metals and other commodities. The company holds interests in the South Mountain property that includes 18 patented mining claims covering an area of approximately 346 acres; 36 acres of private land; 21 unpatented mining lode claims covering an area of approximately 290 acres; leased private land covering approximately 489 acres; and private land not contiguous with the mining claims covering an area of 360 acres located in the South Mountain Mining District, Owyhee County, Idaho. It also holds interests in the Trout Creek project, which comprises 26 unpatented claims covering an area of approximately 533 acres located in Lander County, Nevada. Thunder Mountain Gold, Inc. was incorporated in 1935 and is based in Boise, Idaho.