kilometres northwest of Anderson Lake.

The area is underlain primarily by basaltic lavas of the Upper Triassic Karmutsen Formation (Vancouver Group). These rocks are mostly massive flows and pillow lavas of partly amygdaloidal basalts, with minor tuffs, volcanic breccias and agglomerates. A major unconformity separates the Karmutsen Formation from the overlying Upper Cretaceous Nanaimo Group. Haslam and Comox Formations, which consist of fine- to coarse-grained detrital sedimentary rocks. The Benson Member is a pebble-cobble-boulder conglomerate which marks the unconformity in some areas. Diorite and granodiorite of the Late Eocene to Early Oligocene Mount Washington Intrusive Suite (formerly Catface Intrusions) have intruded the above rocks, forming stocks, sills and dikes.

Locally, the former Mount Washington Copper (MINFILE 092F 117) and Domineer/Lakeview (MINFILE 092F 116) mine tailings dam carries values in base and precious metals.

In 2011, Clibetre Exploration completed a program of geochemical sampling and fifteen holes of overburden drilling, totalling 64.8 metres, on former tailings located 6 kilometres to the east. The average value of all fifteen holes over 64.8 metres yielded 0.124 gram per tonne gold, 5.83 grams per tonne silver and 0.088 per cent copper; while the best 23.7 metres yielded values of 0.174 gram per tonne gold, 7.7 grams per tonne silver and 0.10 per cent copper (Assessment Report 32514).