The Race Horse showing is located 1.0 kilometre to the west of the Kitsault River, 25.0 kilometres to the north of the town of Alice Arm. A copper-bearing vein has been periodically explored since 1913.

The area is underlain by a sequence of volcanics and sediments of the Upper Triassic Stuhini Group and the Lower Jurassic Hazelton Group. The sequence is folded into the doubly plunging, north-northwest trending Kitsault River syncline. This sequence has been regionally metamorphosed to greenschist facies.

The Race Horse showing lies at the western margin of a 10 kilometre long northwest trending body of gossanous Hazelton Group feldspar-hornblende porphyritic andesite. The andesite, informally known as the "Copper Belt", is extensively pyritized with variable silicification and sericitization along its length.

The showing consists of a northwest trending quartz vein that has been traced in a series of trenches for 90 metres. It is developed along the east side of a fault trending 120 degrees. The vein is mineralized with pyrite and minor chalcopyrite. A sample of the vein assayed 1.33 grams per tonne gold, 69 grams per tonne silver and 0.9 per cent copper (Minister of Mines Annual Report 1913, page 82).

During 2010 through 2019, Dolly Silver Corporation explored the area as apart of the Dolly Varden property. A complete property exploration history can be found at the Dolly Varden (MINFILE 103P 188) occurrence.