The Wrich 1 occurrence is located at an elevation of approximately 1850 metres on an east-facing slope, east of the Finlay River and approximately 8.5 kilometres east of its confluence with the Firesteel River, about 250 kilometres north of the community of Smithers.

Regionally, the area is situated within a Mesozoic volcanic arc assemblage, which lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Paleogene sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins.

Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Stuhini Group andesite flows and pyroclastic rocks, and marine sedimentary and volcanic rocks of the Lower to Middle Jurassic Hazelton Group. These rocks have been intruded by plutons and other bodies of the mainly granodiorite to quartz monzonite Early Jurassic Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calc-alkaline volcanics of the Toodoggone Formation (Hazelton Group).

The dominant structures in the area are steeply dipping faults that define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high-angle, northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.

The occurrence area is underlain predominantly by lithologies of the Attycelley and Saunders members of the Toodoggone Formation. Non-welded lapilli-ash tuff, subordinate lapilli-block tuff with interspersed ash flows and lava flows and interbedded epiclastics comprise lithologies of the Attycelley Member. The Saunders Member consists of partially welded, crystal-rich dacitic ash flows. To the southwest these rocks are in fault contact with Stuhini Group volcanics. Rocks of the Stuhini Group consist of generally massive, dark, coarse grained porphyritic augite basalt, fine-grained aphyric basaltic andesite lava flows with subordinate interbeds of lapilli tuff and volcanic breccia (Bulletin 86). The major fault has a variable strike from 010 to 160 degrees and is crosscut by a later fault striking 070 degrees and displacing stratigraphy approximately 15 metres.

Locally, a large gossan zone in andesitic flows and tuffs hosts four parallel, mineralized, quartz-carbonate veins within a zone 165 metres wide by 280 metres long. Vein widths vary from 0.1 to 3.0 metres with a maximum individual strike length of 110 metres over a total length of 200 metres. The strike of the veins is 080 to 125 degrees with a steep dip to the north and south. Composition of the veins is white to grey quartz, chalcedonic quartz and open-space quartz and calcite. Sphalerite, galena and chalcopyrite along with disseminated pyrite and a soft grey sulphide, probably tetrahedrite or argentite, comprise sulphide mineralization. Malachite, azurite and limonite are locally abundant. Propylitic and local clay alteration are associated with the veins.

Another zone of mineralization, located approximately 300 metres to the north, consists of propylitic altered andesite hosting potassium feldspar-quartz veins, up to 0.15 metre wide, with minor pyrite and sphalerite. The veins trend 350 degrees.

In 1981, a grab sample (CG-LT-15) of quartz vein with pyrite, chalcopyrite, galena, sphalerite and azurite assayed 0.24 gram per tonne gold, 60.9 grams per tonne silver, 0.413 per cent copper, 5.89 per cent lead and 3.16 per cent zinc (Assessment Report 10705). In 1987, a sample (6929), taken from a 5- to 10-centimetre-wide quartz-carbonate vein (no. 4) assayed 160.5 grams per tonne gold, 111.6 grams per tonne silver, 1.91 per cent lead and 2.6 per cent zinc, whereas other grab samples from the veins yielded values up to 1.3 per cent copper, 3.1 per cent lead, 9.0 per cent zinc and 364.1 grams per tonne silver (Assessment Report 17459). In 1988, diamond drilling of these four veins indicated that the no. 2 and 4 veins yielded the highest assays. Results from analyses of drill core is as follows: vein 2 assayed 65.31 grams per tonne silver, 8.9132 per cent zinc, 1.9394 per cent lead, 0.4348 per cent copper and 0.041 gram per tonne gold over the interval 81.55 to 82.55 metres from drillhole 1; vein 4 assayed 64.7 grams per tonne silver, 9.99 per cent zinc, 0.6821 per cent lead, 0.2463 per cent copper and 0.036 gram per tonne gold over the interval 38.46 to 39.46 metres from drillhole 1 and (a second vein 4 sample) 94.5 grams per tonne silver, 9.99 per cent zinc, 0.7289 per cent lead, 0.4920 per cent copper and 0.019 gram per tonne gold over the interval 44.96 to 47.96 metres from drillhole 2 (Assessment Report 18098). Results from this drill program suggest that veins 2 and 4 are associated with a probably Early Jurassic (Toodoggone equivalent) quartz-eye porphyry dike.

In 1999, a sample (DR-4) of potassium feldspar-quartz vein material from the northern mineralized zone yielded 0.30 per cent zinc, 0.99 gram per tonne gold and 12.3 grams per tonne silver (Assessment Report 26251).

In 1980, initial silt sampling of the area by Serem Ltd., the predecessor to Cheni Gold Mines Inc., resulted in the staking of the Wrich claims in 1981. Subsequent work, during 1982 through 1985, included geological mapping, prospecting, rock and soil geochemical sampling and geophysics, consisting of VLF-EM and VLF-EMR surveys. In 1987, Cheni conducted a program of rock and soil sampling and geological mapping on the area. An option agreement was made between Skylark Resources Ltd. and Cheni Gold Mines Inc. following this program. The 1988 exploration program by Skylark on the Wrich claim consisted of drilling 10 BQ thin-wall diamond-drill holes, totalling 963.35 metres. Additional surveys conducted during the 1988 program included geochemical and geophysical consisting of VLF-EMR and magnetometer.

During 1997 through 2003, Stealth Mining Corp., on behalf of Electrum Resource Corp., completed programs of rock and soil sampling, geological mapping and ground geophysical surveys on the area. In 2009, Gold Fields Toodoggone Exploration Corp. completed a program of rock and silt sampling, geological mapping, a 180.8 line kilometre ground induced polarization survey and a 2778.0 line kilometre airborne magnetic survey on the area as part of the Pine property.

During 2016 through 2018, Amarc Resources Ltd. completed programs of soil and rock sampling, geological mapping, 115.0 line kilometres of ground induced polarization surveys and 1940.0 line kilometres of airborne magnetic surveys on the area as the Joy property. In March of 2018, Serengeti Resources Inc. signed an option agreement to acquire a 100% interest in the Atty and ATG properties from Finlay Minerals Ltd. and Electrum Resource Corp., respectively. In 2018, Serengeti Resources Inc. conducted a program of rock sampling, core re-logging and sampling, geological mapping and a 20.0 line kilometre ground induced polarization survey on the area as the ATTY-ATG property. The property covers eight occurrences: Attycelley (094E 022), Awesome (094E 081), Fog 1 (094E 115), Fog 2 (094E 116), Fog 3 (094E 117), Kem 6 (094E 119), New Mess 1 (094E 120), and Wrich 1 (094E 122). During the months of June, July and August 2019, Serengeti conducted a broad exploration program on the ATTY property in order to follow up on drill core re-logging and sampling, mapping and geophysics completed in 2018. The 2019 program included 30.8 line kilometres of ground-based IP surveys in two phases and a diamond drilling program of 2318 metres in six drillholes.