The Camp 16 (Cathmar) quarry is situated near the Canadian Pacific railway line between Spuzzum and North Bend and operated up to 1912. A considerable amount of stone was quarried for use in culverts, bridge piers and as fill along the line. It is not believed to have been of high enough quality for use as building stone.

The area is underlain by Oligocene aged granodiorite assigned to the Chilliwack batholith which has intruded granodiorite of the Cretaceous Spuzzum Intrusions.

The stone quarried was described as a coarse grained "quartz diorite porphyrite" consisting of fine quartz, orthoclase, hornblende and minor biotite with white plagioclase phenocrysts. Aplitic veinlets cutting much of the rock and stringers of quartz occurring along joints apparently detracted from the overall appearance of the

The quarry consisted of an irregular excavation approximately 200 metres long in the mountain side above the railway.