The Tah 15 South West occurrence is located on a steep southeast facing slope northwest of the Tsowwin River, at an elevation of approximately 800 metres.

The area is underlain by Upper Triassic Vancouver Group volcanics and sediments comprised of Karmutsen Formation basalts and carbonates and clastics of the Quatsino and Parson Bay formations. Granodiorite of the Early to Middle Jurassic Island Plutonic Suite and Eocene Catface or Mount Washington Intrusions has intruded the Vancouver Group rocks.

Locally, a pod of strongly gossanous sulphides, primarily pyrite and chalcopyrite, is hosted by felsic to intermediate volcanic rocks. In 1984, rock sampling yielded up to 0.21 gram per tonne gold and 55.7 grams per tonne silver (sample 3485; Assessment Report 13681).

During 1979 through 1981, Pan Ocean Oil completed programs of geological mapping and geochemical sampling on the area as the Tah 1-19 claims. In 1983, Aberford Resources continued the previous mapping and sampling programs. In 1984, Homestake Canada completed a program of geological mapping and rock sampling. In 1987, the Vig 6 property was staked to cover the area and a program of rock and soil sampling was completed. In 1992, a program of geological mapping, prospecting and geochemical sampling was completed. In 2007 and 2008, Silverlake Capital completed programs of geochemical sampling and geological mapping on the area. During 2009 through 2013, Homegold Resources completed programs of prospecting, historical literature reviews and air photo interpretations on the area as part of the Head Bay property.