The Colleen showing is located at the headwaters of Skeff Creek, approximately 7.5 kilometres south east of Greenwood.

The area is underlain by volcanics and metasediments of the Attwood Group and greenstones of the Knob Hill Group. These are cut by granodiorites of the Jurassic Nelson Intrusions.

Locally, a quartz vein carries copper values. No other info is available.

In 1968, Rayore Mines Ltd. conducted an exploration program of geophysical and geochemical surveys. During 2008 through 2012, Grizzly Discoveries Inc. completed programs of soil, stream sediment and rock sampling, geological mapping and ground geophysical surveys on the area as the Overlander area of the Greenwood property.