The Grand Canyon limestone showing is located approximately 72 kilometres east of the town of Prince George on the western bank of the Fraser River, in the Cariboo Mining Division.

The Grand Canyon limestone showing occurs within the lower Cambrian Gog Group. The Gog Group is an assemblage of shale, sandstone and limestone exposed in the incision of the Fraser River. The occurrence comprises a broad band of mixed limestone which crops out on both sides of the Fraser River.

In 2015, Preem Industrial Inc. completed a small outcrop sampling program targeting a marble unit for quarriable carving stone, approximately 9.5 kilometres to the west of the Grand Canyon showing. The two samples submitted for testing yielded values of 94.44 per cent and 94.81 per cent calcium carbonate, which is under the 95 per cent threshold value for high-grade limestone (Assessment Report 35674).