The CIH occurrence is located west of Waterloo Creek, approximately 3.5 kilometres north east of Mount Curran.

The area is underlain by basalts, breccias, diabase and gabbro of the Upper Triassic Karmutsen Formation, Vancouver Group. A fault zone, cutting through the strata, has resulted in the formation of a canyon 5 metres wide and 15 metres deep, with a creek flowing within. In this canyon an intrusive stockwork is found, ranging from felsite to rhyolite in composition. The width of the stockwork varies from 2.4 to 5 metres and outcrops in the canyon for about 100 metres. It is cut off at one end by a fault and at the other end by a "dyke of alteration rock".

This stockwork is mineralized with scattered to massive pyrite, chalcopyrite, arsenopyrite, sphalerite, calcite, quartz, stibnite, erythrite and cinnabar. The "dyke of alteration rock" also carries scattered pyrite, chalcopyrite and cinnabar.

In 1986 and 1989, the area was rock sampled and prospected by B. Buskell as the CIH 1 claim. In 1989, two diamond drill holes, totalling 91.4 metres, were also completed. One sample assayed 7.54 grams per tonne gold, 0.2 per cent copper, and 23 per cent arsenic (Assessment Report 18747).

In 2008, Duke Mountain Resources Canada completed a program of prospecting and geochemical sampling on the area as the Rosewall-Waterloo property.