The AY occurrence is located on the western side of the ridge separating East and West Lehto creeks.

The area is underlain by Jurassic and older volcanics (rhyolite, andesite, dacite, basalt, breccia, tuff breccia) and sediments (greywacke, siltstone, conglomerate, marble/dolostone) cut by the Early Jurassic Lehto batholith (hornblende granodiorite, quartz monzonite, syenodiorite porphyry, syenite) and minor Quaternary–Miocene basalt and lamprophyre dikes. The volcanics and sediments are indurate and silicified with sericite-chlorite-clay secondary mineral assemblages. The older volcanics and sediment roof pendant is engulfed by the Lehto batholith felsic to intermediate intrusive.

Locally, andesites of the Betty Creek Formation host shears and quartz veins containing pyrite.

In 1990, Kinghorn Energy completed a program of prospecting on the AY claims. A mineralized quartz vein returned 64.6 grams per tonne gold over 0.15 metre (Assessment Report 20503).

In 2006 and 2007, Hathor Exploration Ltd. completed a 7228.7 line-kilometre airborne geophysical survey on the area as the Snip claims of the Iskut project. In 2008, Max Minerals Ltd. examined the property.