The East Plateau showing is located on a ridge east of Ecstall River and west of Johnston Lake, 72 kilometres southeast of Prince Rupert and 60 kilometres southwest of Kitimat.

The showing is one of a cluster of showings around the Ecstall deposit (103H 011). The north-northwest trending Ecstall Pendant, a metasedimentary-metavolcanic belt within the Central Gneiss Complex, is flanked by granodiorite of the Coast Range Intrusive Complex.

A heavily pyritized, sericitic shear zone, 1.0 metre wide, occurs in chlorite schist. The shear zone strikes 175 degrees and dips 85 degrees west and contains trace amounts of sphalerite. A sample assayed 0.184 per cent zinc and 0.032 per cent copper (Assessment Report 15488).

This prospect crops out 930 metres northeast of the north end of the North Lens of the Ecstall deposit (103H 011), at an elevation of 665 metres (Hassard et al., 1987b, p.28 and Figure 6). Exposed in a west-southwest-draining creek, a one metre wide sericitic shear zone strikes parallel to the Ecstall massive sulphide lenses and hosts 5 per cent pyrite and trace disseminated sphalerite. A single grab sample assayed 0.184 per cent zinc and 0.032 per cent copper (Hassard et al., 1987b). Host rocks to the pyrite-sericite schist are quartz-chlorite schists. This prospect has not been examined in the field.

The East Plateau showing was included in the 2019 airborne VTEM survey over Kingfisher Resources Ltd.'s Ecstall property. The airborne survey was aimed at detection of structures and/or conductors related to potential Cu-Au-Zn-Ag VMS-style mineralization (Assessment Report 39155).