The Olga showing is located on the south side of Glacier Creek, 6 kilometres northeast of Stewart. These veins were discovered in 1925 from prospecting in the Portland Canal Fissure Zone.

The occurrence is comprised of two veins in argillite (slate) of the Middle Jurassic Salmon River Formation (Hazelton Group). The veins are developed in the Portland Canal Fissure Zone. This zone of faulting and shearing trends north, dips steeply west and hosts a vein system that extends southward for 6.5 kilometres. As with other veins in the zone the Number 1 and Number 2 veins strike north and dip west.

The Number 1 vein is reported to be well mineralized; a selected grab sample assayed trace gold and 510.87 grams per tonne silver (Property File - Gaul, 1925). A 1.2 metre chip sample across the vein assayed 7.146 per cent zinc and 343.5 grams per tonne silver equivalent for combined gold, silver and lead (Minister of Mines Annual Report 1925, page 84). The Number 2 vein contains only sparse pyrite in a gangue of quartz.

During 2005 through 2010, Auramex completed programs of prospecting, geological mapping, geochemical sampling and airborne geophysical surveys on the area as the Bear River-Surprise Creek property. During 2017 through 2020, Singer Resources Inc. and American Creek Resources Ltd. completed programs of geochemical sampling, a 13.5 line-kilometre induced polarization survey and a 438.5 line-kilometres airborne magnetic and LiDAR survey on the area as the Dunwell property.