The South Grid East showing is located west of Ecstall River, 77 kilometres southeast of Prince Rupert and 62.2 kilometres southwest of Kitimat.

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 3-metre-wide pyritic shear zone occurs in a quartz-sericite belt. The zone strikes 172 degrees and dips 85 degrees east. A sample assayed 0.12 per cent copper and 0.024 per cent zinc (Assessment Report 15488).

The South Grid East pyritic quartz-sericite schist (rhyolite) lies stratigraphically 350 metres east of the Mariposite quartz-sericite schist belt (103H 052) and crops out to the south of Allaire Creek. This unit is 20 to 90 metres thick, strikes 172 degrees, dips 85 degrees east and extends for 1.7 kilometres along strike from Allaire Creek to Balan Creek (Hassard et al., 1987b, p.28 and Figure 8). Pyrite content ranges up to 30 per cent. A grab sample assayed 0.12 per cent copper and 0.024 per cent zinc (Hassard et al., 1987b). This quartz-sericite schist horizon could be the stratigraphic continuation of the unit exposed at the Cascade showing (103H 095). This showing was not examined in the field.

The South Grid East 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).