The Lakeside showing is located 7 kilometre west-southwest of Vernon at Okanagan Landing.
In this area, west of the Okanagan Valley fault zone, sedimentary rocks of the Devonian to Triassic Harper Ranch Group are in probable unconformable contact with Upper Triassic to Lower Jurassic Nicola Group sedimentary and volcanic rocks. Middle Jurassic granitic rocks of the informally named Terrace Creek batholith intrude older rocks. Outliers of Eocene Penticton Group volcanic rocks are present. Much of the valley floor is covered by thick Quaternary sediments.
Quaternary glacio-lacustrine beds host a clay deposit quarried for industrial use. In 1920, some good quality tile was produced from the clay.