The Columbia showing is located 1.6 kilometres west of the dam on the Kitsault River in the Upper Kitsault Valley, 31 kilometres north of Alice Arm. A largely barren quartz vein was investigated for precious metal mineralization between 1918 and 1922.

The showing consists of a quartz-breccia vein, 1.8 to 4.6 metres wide, striking 135 degrees and dipping 70 degrees northeast. The vein occurs in Middle-Upper Jurassic Hazelton Group argillite which strikes 035 degrees and dips 31 degrees northwest. The vein varies from being a network of quartz stringers in numerous brecciated argillite fragments to essentially pure quartz with no argillite fragments. The quartz contains sparse pyrite with a trace of chalcopyrite. A sample of the vein from an adit driven underneath the outcrop for a distance of 25 metres assayed 9.29 grams per tonne gold (Minister of Mines Annual Report 1921, page 52).