The Switchback showing was found during staking of the Dave's and Fault claims in October 1991 and the Switchback 1-8 claims were staked to cover it in July 1992. The showing, located on a logging road is an area of subcrop containing rusty weathering and vuggy cobbles of cherty silica and lesser clay minerals with fine to coarse-grained pyrite and marcasite(?). The sulphides are found disseminated, in coarse clots, filling fractures and crudely banded, and constitute up to 25 per cent of the volume of large cobbles. A high sulphide banded sample analysed 2.3 grams per tonne silver, and a low sulphide cherty sample analysed 120 parts per billion gold (Assessment Report 22907). The showing area is located within and near the top of a trachyte porphyry unit of the Eocene Penticton Group.

The property area was prospected in the early 1900s when the Franklin Camp, to the north, was active; no mineralization was reported east of Burrell Creek, but a number of occurrences were staked in greenstone west of the creek. During 1973 and 1974, the east side of Burrell Creek was opened by logging roads. Prospecting at this time by Walter Buller discovered three areas of mineralization on which he staked small claim blocks. The Shorts and Chewmi claims were staked in September of 1987 by S. Davies. In May and June of 1988 a preliminary program was conducted to locate Buller’s showings, and to assess the geochemistry of the property and its potential for further work. Two of Buller’s showings, WSW (082ESE177) and Burr (082ESE136), were located and sampled. In 1989, a small north-south trending grid was emplaced in the area of the WSW showing and used to conduct VLF-EM and magnetometer surveys and soil samples collected over several anomalous responses. The Annes 1-4 claims were staked in 1990 by D. Coffin and E. Coffin to cover extensions of the anomalies. During reconnaissance traverses the northerly trending Ridge alteration zone was discovered, as was similar alteration adjacent to northerly and northeasterly trending faults seen along St. Annes Creek. The baseline was extended to cross the Ridge alteration and geophysical profiles obtained. In 1991, the grid was expanded and infill lines added and VLF-EM data was collected and further mapping conducted. The Zap showing was discovered during this work. The Ridge Veins were discovered adjacent to the alteration zone, and the LJ showing (082ESE178) relocated. The Dave's and Fault claims were staked in late 1991 by D. Coffin and E. Coffin to cover the extension of a main fault trend, during which time the Switchback zone was discovered. During 1992 prospecting traverses were carried out. In 1993, additional VLF-EM and magnetometer surveys were conducted in addition to soil sampling.