The Dewdney 4 showing is located about 33 kilometres northeast of Kimberley and about 600 metres northeast of Lewis Creek. The showing area is underlain by sedimentary rock of the Helikian Creston Formation, Purcell Supergroup.

In 2014, prospecting was carried out in the Lewis Creek area by PJX Resources Inc. who collected 45 rock samples for analysis. At the DT4 sample site, a bedding parallel quartz vein with galena and pyrite and hematite stain is hosted in green-grey argillaceous quartzite. The sample graded 0.21 per cent lead and 2.2 grams per tonne silver (Assessment Report 35582). Sample DT21, a talus sample located about 270 metres northwest of sample DT4, returned a grade of 0.48 gram per tonne gold. Values for other elements were not anomalous.

In 2016 to 2022, PJX Resources Inc. conducted geological mapping, rock geochemistry sampling, airborne geophysics, and drilling on the Dewdney Trail Property (Assessment Reports 36649, 38859, 40906, 40908).

Refer to Lewis (082GNW104) for related details of the Lewis Creek prospecting area, contained within the Dewdney Trail Property.