The BORIN showing is on the north side of Borin Creek, approximately 1 kilometre downstream from the Borin Creek placer deposits (Minfile 092O 031). The occurrence is approximately 90 kilometres south-southwest of Williams Lake and 74 kilometres northwest of Clinton, B.C.

From 1983 to 1986, Minequest Exploration Associates Ltd. conducted programs of silt and soil sampling, prospecting and geological mapping and VLF-EM geophysical surveys, outlining an area of conductive bedrock on the north side of Borin Creek (Assessment Report 14944). Nexus Resource Corporation conducted subsequent exploration programs in the anomalous area in 1988 with Blackdome Mining Corporation following up with geological, geochemical and airborne EM and magnetic surveys. Chevron Canada implemented programs of geological mapping, rock and soil sampling and heavy mineral sampling in 1997.

In 2012 through to 2017, Caribou Rose Resources Ltd. carried out programs of rock, silt and soil sampling and prospecting on their Koster Dam property. In 2018, rock chip sampling revealed two anomalous gold samples in the Borin Creek Zone. Angular sericite and clay-altered float sample 1815 returned 0.21 grams per tonne gold and sample 1816 approximately 200 metres upstream returned 0.41 grams per tonne gold (Assessment Report 37631). In 2019, Caribou Rose Resources teamed up with Oakley Ventures Inc. with more geochemical sampling of soils, silts and rock on the Koster Dam property.

In 2021, Caribou Rose Resources and Ameriwest Lithium Inc. conducted an airborne magnetic and LiDAR survey over the property (PR REL May 20, 2021). Reconnaissance follow-up prospecting in 2022 and 2023 returned 4 of the collected 58 chalcedony-rich subangular float samples assaying 2.61, 2.38, 1.47 and 0.74 grams per tonne gold (PR REL November 30, 2023).