The MM05-1 showing is located on the west shore of Tagish Lake, just north of the mouth of Buchan Creek, and accessed is by boat or helicopter.

The showing area is underlain by the Devonian to Middle Triassic Boundary Ranges Metamorphic Suite comprising greenstone and lesser quartz mica schists (Unit PPm from Open File 1989-13). A stock of the Early Jurassic Aishihik plutonic suite consisting of granodiorite intrudes to the southwest.

A quartz-calcite vein mineralized with cubes and crystals of pyrite and arsenopyrite is exposed in an overgrown trench in chlorite-actinolite-biotite schist. The vein is a drusy quartz-flooded shear and breccia zone within the metamorphic rocks. Some kaolinite has been developed and magnetite is also evident. A grab sample from this vein assayed 41 grams per tonne gold and 20 grams per tonne silver (Open File 1989-13). Best results from rock sampling in 1994 yielded up to 45.8 grams per tonne gold and 52.3 grams per tonne silver (Assessment Report 23960).

The L-331, L-332 and L-333 claims were staked in July 1993 to cover the lithogeochemical anomaly (MM05-1) discovered by M.G. Mihalynuk in the regional geochemical survey of Fantail Lake (Open File 1989-13).

In 1994, L.D. Lutjen conducted physical, geochemical, and geophysical surveys over the showing area. The showing was completely covered by alder and in 1994 the sloughed in trench was dug out to a width of 2 metres and a length of 5 metres. The trench had a strike direction of 114 degrees, and the north and south walls were mapped from east to west, with the main vein being about 3 metres in width at this point.

In 2007, Hard Rock Gold collected a total of 296 soil samples taken at 50-metre intervals over a 2.6 square kilometre grid. The north-south grid was placed adjacent to the west of the MM05-1 area. Copper, molybdenum, lead, zinc, nickel, uranium, and selenium all show an anomalously high association with the high strontium, calcium, and barium values. The other elements assayed had generally low and erratic values, including gold, silver, and arsenic. The best gold values were 126.3 and 28.9 parts per billion (Assessment Report 29757).

In 2016, Hard Rock Gold reworked and reinterpreted the 2007 soil geochemistry survey, which was reported to have been poorly presented, with the stations of the geochemical data being mis-plotted. A professional geochemist interpreted the results, and a professional geologist prepared an exploration program based on the corrected information (Assessment Report 36136). The corrected geochemistry data interpretation, using silver as a pathfinder mineral for gold, revealed a silver anomaly of about 1 kilometre in length.