The Wel 11-12 occurrence is located near the western side of Wells Lake, approximately 4 kilometres east of the Tulameen River.

This area in the vicinity of Wells Lake is underlain by biotite granodiorite of the Late Jurassic to Early Cretaceous Eagle Plutonic Complex.

Locally, a zone of copper-molybdenum mineralization, 550 metres wide, trends 145 degrees for at least 1000 metres, roughly paralleling the regional foliation of the area. The zone contains numerous quartz veins mineralized with pyrite, chalcopyrite, malachite and sporadic molybdenite. Intersecting pyrite-chalcopyrite-bearing veins are noted to strike in three distinct directions. Chalcopyrite also occurs as disseminations and as blebs along fractures in the enclosing granodiorite.

In 1974, a sample (8467) yielded 0.480 per cent copper, 5.2 grams per tonne silver and 0.075 gram per tonne gold (Assessment Report 5564). Two other samples, 8466 and 8460, taken approximately 250 metres to the northwest and 450 metres to the southwest, yielded 0.136 and 0.116 per cent copper, respectively (Assessment Report 5564).

In 1974 and 1976, Canadian Occidental Petroleum completed programs of rock, silt and soil sampling, geological mapping and a ground magnetic survey on the area as the Wel claims. In 1979, Canadian Natural Resources, on the behalf of Georgia Resources, completed a program of geological mapping, soil sampling and ground magnetic and induced polarization surveys on the area immediately north and west. In 2010, the area was prospected by L. Sookochoff.