The Yahu showing is located on Yahu Creek, approximately 2 kilometres south of Port Renfrew.
The area, according to Muller, is underlain by a metagreywacke schist unit and an argillite metagreywacke unit, both of the Jurassic to Cretaceous Leech River Complex (Geological Survey of Canada Open File 821). The former unit consists of metagreywacke, meta-arkose and quartz-feldspar biotite schist; the latter consists of thinly bedded greywacke and argillite, slate, phyllite and quartz-biotite schist. Felsic and granodiorite dikes have intruded both units.
Locally, slates and schists host gold-bearing quartz-arsenopyrite (-pyrite) veins.
In 2005 through 2010, the area was prospected and sampled as the Yahu Creek, RocDoc and Le Baron 1-2 claims. A sample (314594) assayed 45.0 grams per tonne gold, 96.1 grams per tonne silver and 2.9 per cent copper (Assessment Report 28953).