The Red Cliff East occurrence is situated in the lower part of the American Creek Valley extending 3 kilometres up the creek from its confluence with Bear River, about 21 kilometres north of Stewart.

The showing area is underlain by volcanic and volcaniclastic rocks belonging to the Lower Jurassic Unuk River Formation (Hazelton Group). On the east side of American Creek, black argillites and/or tuffs are highly sheared and locally silicified. Strike of the rocks appears to be south with a steep dip to the west. On the west side of American Creek, the rocks are weakly sericite altered, green andesite tuffs with up to 5 per cent fine-grained pyrite.

A grab sample (RCE-4) from a completely chlorite-altered rock with some malachite on surface and also minor quartz replacement assayed 0.10 per cent copper and 5.8 grams per tonne silver (Assessment Report 32019).

In 2005, work on behalf of J. Marx on the Joe Dog claims comprised a seismic refraction survey conducted along 455 metres of cut line. The survey was to determine the depth of the bedrock and to estimate the potential volume of the gravel deposited along American Creek. In 2009, Nanika Resources Ltd. conducted a geochemical program during which a total of 22 rock, 4 silt and 155 soil samples were collected. In 2010, Nanika Resources collected 6 grab and 7 float samples from the property.