The Glenside (Lot 4281) group is located between Ferguson and Surprise creek about 500 metres from the confluence of the two creeks. The Ogontz (Lot 4282) is probably part of the original Glenside group and the Tom Thumb (Lot 3728) may be. The Vera (Lot 4283) (082KNE223) was reported to be part of the Glenside group in 1887 but it and its associated claims are located about 2 kilometres to the north. The location of the defunct Tom Thumb is not known.

In general, bands of Lower Cambrian Badshot Formation limestone are repeated by folding. These bands are interlayered with schist and phyllite of the Cambrian to Devonian Index Formation, Lardeau Group.

Three quartz and galena veins can be traced from Lardeau Creek to a point about 300 metres distant where they unite in one large vein which can be traced for kilometres. At a point about 150 metres below where the three veins unite, a tunnel is in a distance of 24 metres, on the centre small vein. In 1898, it was the intention of the owners (Commonwealth Mining and Development Company) to follow this vein to the point of convergence of all three veins. An opencut is also run for 6 metres at the point of convergence of the veins, which, after cutting through the iron capping, exposed a vein of well-mineralized quartz with stringers of galena. No work is reported after 1898.