On the Hudson Bay Mountain Ski Hill road is a large outcrop on the north or right side of the road. The rocks exposed in this road cut are typical maroon to red weathering tuffs of the Lower Jurassic Telkwa Formation. The strata here are dipping moderately to the east. This orientation is typical of the east side of Hudson Bay mountain. On the west or back side of the mountain the Telkwa Formation is thrust over an overturned syncline of Middle Jurassic sedimentary rocks of the Smithers Formation.