The X-10-U-8 Fr. (Lot 5195) showing is located about 900 metres south of Monitor Lake, a small lake approximately 500 metres south of Long Lake, 16 kilometres north of Stewart.

The area is underlain by Hazelton Group rocks of the Lower to Middle Jurassic Mount Dilworth Formation and overlying Middle-Upper Jurassic Salmon River Formation (Open File 1987-22). These rocks lie on the crumpled west limb of the north-northwest trending Dilworth syncline. These rocks comprise felsic tuff and breccia and lapilli tuff.

Few details are available on the mineralization. A shallow opencut, 350 metres north of the Sunshine adit (104A 093), exposes a 3 metre wide quartz vein. The vein strikes west, dips 50 degrees north and contains irregular disseminations and blebs of pyrite and sphalerite. A sample across 0.61 metre of the best exposed mineralization assayed nil gold and nil silver (Minister of Mines Annual Report 1936).

The Portland Canal Goldfields Syndicate Limited owned the X 10U 8 (Extenuate) claim group in the area. The name of the company was changed to Extenuate Gold Mines Ltd. in 1926. Little work was reported at this time. Bush Consolidated Gold Mines Ltd. consolidated several claims and claim groups in the area south of Long Lake in 1927, including the Extenuate group. In 1962, New Indian Mines Ltd. conducted geological mapping in the area. In 1979, Ocean Home Explorations Ltd. carried out further geological mapping and sampling in the area.