The Rhyolite Ridge showing is situated on a ridge top between King and Terwilligen creeks and 9.5 kilometres west of Unuk River. The location is 59 kilometres southwest of Bell 2 Lodge on Highway 37, and 75 kilometres northwest of Stewart, B.C.

The Rhyolite Ridge showing is hosted by massive felsic volcanics (rhyolite) interlayered with a sequence of clastic sedimentary rocks belonging to the Jurassic Hazelton Group. The interbedded felsic volcanic and argillite-siltstone units show intense sericitic and white argillic alteration, hematitic gossan and local massive pyrite bands. The showing was discovered during a mapping and prospecting program in October 2018 by Metallus Resources on their Kirkham property. Field traverses outlined widespread 200 by 300 metres sericitic alteration and intense gossan constrained within a north-south trending graben structure in the western part of Kirkham Property.

In 2018, Metallis Resources collected 12 selective rock samples were collected in 2018 and analyzed, from a 200 by 300 metre zone of intense gossans and sericitic alteration. One of the samples (Y060657), collected from a limestone unit with quartz-carbonate veins, assayed 0.5 gram per tonne gold. The lithostratigraphic units and anomalous gold values in rock samples are being interpreted as a vent proximal facies with a siliceous, shallow marine exhalative unit (Assessment Report 38231).

See Mount Dunn (104B 079) for further geological and historical details of the Mount Dunn/Kirkham property.