Several outcrops of limestone, of the Carboniferous to Jurassic Cache Creek Group, project above the surrounding cover of fluvioglacial sediments on Lot 5415, 3 kilometres north of the Nechako River and 19 kilometres east-southeast of Vanderhoof.

The largest exposure outcrops over a 300 by 140 metre area. Drilling in 1977, indicated that the deposit continues to the south and west under a layer of sand and gravel, up to 15 metres thick. Together, the limestone outcrop and subcrop, cover a total area of 400 by 240 metres. Drilling on outcrop has encountered continuous limestone to a vertical depth of at least 36.6 metres. Bedding strikes north to northeast and dips 80 to 90 degrees.

The deposit is comprised of massive, white to dark grey limestone containing minor quartz veinlets a few millimetres to a few centimetres thick that are randomly distributed throughout the limestone. A few veinlets of yellow carbonate (dolomite?) are also present.

One grab sample contained 55.17 per cent CaO, 0.59 per cent MgO, 0.44 per cent SiO2, 0.52 per cent Al2O3, 0.14 per cent Fe2O3, 0.01 per cent P2O5, 0.05 per cent SO3 and 43.00 per cent ignition loss (Industrial Mineral File - A. Smedley, 1989). Samples of cuttings from 25 percussion holes, drilled in a 13 by 5.5-metre area on the south side of the main outcrop, averaged 53.75 percent CaO (95.93 per cent CaCO3) and 2.83 per cent SiO2 (Industrial Mineral File - A. Smedley, 1989). The excess silica is reported to be due to surface contamination. The deposit is estimated to contain at least 5 million tonnes of limestone (Industrial Mineral File - A. Smedley, 1989)

The limestone was periodically sampled, trenched and drilled by Albert Smedley until 1988.