The Hilda occurrence is located at an elevation of approximately 1730 metres on a northeast-trending ridge, approximately 5.7 kilometres north-northeast of Kemess Lake and 5.7 kilometres east of Duncan Lake, about 192 kilometres north-northwest of the community of Germansen Landing.

The Toodoggone district lies within the eastern margin of the Intermontane Belt and is underlain by a northwest-trending belt of Paleozoic to Paleogene sediments, volcanics and intrusions covering an area of 90 by 25 kilometres. The basement rocks are Proterozoic metasedimentary equivalents of the Hadrynian Ingenika Group. These rocks are unconformably overlain by volcanic and sedimentary units of the Devonian to Permian Asitka Group, which are in turn overlain by Upper Triassic basaltic to andesitic flows, volcaniclastics and minor limestone of the Stuhini Group. Volcaniclastic rocks of the Lower Jurassic Hazelton Group and rhyolitic to dacitic flows, intrusions and volcaniclastics of the Lower Jurassic Toodoggone Formation (Hazelton Group) overlie the Stuhini Group. Further to the west, nonmarine sediments of the Cretaceous Sustut Group overlie the volcanic strata and form the western margin of the district.

The Early Jurassic Black Lake Suite, of quartz monzonitic to granodioritic composition, has intruded the older strata in the central and eastern parts of the region and forms the eastern margin of the Toodoggone district. Within the district, syenomonzonitic and quartz feldspar porphyritic dikes may be feeders to the Toodoggone Formation.

Locally, two styles of mineralization have been identified. The dominant style consists of vein-shears composed of breccia fragments of quartz, lesser fluorite and sulphides within a calcite-chlorite matrix hosting base- and precious-metal values. Sulphides include fine- to coarse-grained sphalerite and pyrite with lesser galena and chalcopyrite. A younger, less-common style of mineralization consists of brecciated quartz vein with semi-massive clusters and/or blebs of pyrite with minor hematite and clots of gold, up to 170 microns in size, associated with pyrite-rich zones. The later style of mineralization is characterized by higher gold values and a lack of base metal values.

The mineralized structure strikes northwest with a dip of 65 degrees to the northeast and is bounded by granitic to monzonitic intrusives to the northeast and intermediate volcanics of the Toodoggone Formation to the southwest.

In 2003, grab samples from mineralized boulders averaged 5 grams per tonne gold and 44 grams per tonne silver with anomalous copper, zinc and lead values (Exploration and Mining in British Columbia 2003, page 19). In 2004, diamond drilling yielded intercepts of up to 13.9 grams per tonne gold and 17.4 grams per tonne silver over 0.4 metre and 2.6 grams per tonne gold, 119 grams per tonne silver, 0.17 per cent copper, 0.34 per cent lead and 9.9 per cent zinc over 0.5 metre in hole KH-04-03, and 4.3 grams per tonne gold, 65 grams per tonne silver, 0.37 per cent copper, 0.59 per cent lead and 13.6 per cent zinc over 1.2 metres in hole KH-04-02 (Assessment Report 27365).

The area has been historically explored in conjunction with the nearby Kemess North developed prospect (094E 021) located 3.5 kilometres west and the Kemess South past-producing mine (094E 094) located 7.4 kilometres south-southwest.

During 1966 through 1971, Kennco Explorations Ltd. completed programs of geochemical sampling and geological mapping on the area immediately west as the Kemess 1-100 claims. In 1975 and 1976, Getty Mines Ltd. examined the property and completed programs of soil sampling and geological mapping on the area immediately west.

During 1986 through 1989, El Condor Resources Ltd. completed programs of rock and soil sampling, geological mapping, trenching and a 14.1 line kilometre ground magnetic survey on the area immediately west as the New Kemess 1-2 claims. In 1990 and 1991, El Condor Resources Ltd. conducted programs of geological mapping, geochemical sampling and a 201.0 line kilometre induced polarization survey on the area as part of the Kemess property.

In 2000 and 2002, Northgate Minerals Corp. completed programs of geological mapping, geochemical sampling, geophysical surveys and diamond drilling on the area as part of the Kemess property. In 2003, Northgate conducted grassroots exploration on its claims. Prospecting late in the field season east-northeast of Kemess North located numerous angular boulders of vein material that are referred to as the Hilda showing. In 2004, six diamond-drill holes, totalling 744.9 metres, were completed on the Hilda occurrence to test the downdip and lateral extension of the mineralized zone, with results confirming the continuation of ‘significant’ mineralization at depth and along strike over narrow (less than 5 metre) widths.

During 2003 through 2011, Northgate completed further programs of prospecting, geological mapping, geochemical sampling, ground geophysical surveys and diamond drilling on the Kemess and Kemess East properties.

During 2013 through 2017, Aurico Gold Ltd. completed programs of geological mapping and diamond drilling on the area as part of the Kemess East property. In 2015, two diamond-drill holes were completed on the Hilda occurrence.