The Three Tramps showing is located 6 kilometres west of Vernon, north of the end of the Vernon Arm of Okanagan Lake. At the showing, an inclined shaft explored a quartz vein and another shaft explored an amphibolite unit hosting chalcopyrite.

In this area, west of the Okanagan Valley fault zone, volcanic and sedimentary rocks of the Devonian to Triassic Harper Ranch Group are unconformably overlain by Upper Triassic to Lower Jurassic Nicola Group sedimentary and volcanic rocks. Occasional Upper Paleozoic ultramafic rocks are associated with the Harper Ranch. These units are intruded by Middle Jurassic granitic rocks informally named the Terrace Creek batholith. Patches of Eocene Penticton Group volcanic rocks overlie the older rocks.

Amphibolite and hornblendite of Upper Paleozoic(?) age hosts copper and gold mineralization. The amphibolite hosts disseminated pyrrhotite, chalcopyrite, pyrite, magnetite and malachite. Chalcopyrite-pyrrhotite and magnetite stringers, up to 3 millimetres thick, are reported. The chalcopyrite occurs as disseminated grains or along pyrrhotite or magnetite stringers. Samples taken in 1987 assayed low values, the highest was 0.017 gram per tonne gold (Assessment Report 18983).

A 2.5-metre inclined shaft was driven along the footwall of a narrow barren quartz vein striking 223 degrees and dipping 45 degrees northwest.

From 1897 to 1899, an 11-metre shaft was sunk and in 1903 the claim was Crown-granted. The showing was sampled by G. Benvenuto in 1988.