Williams Cone

Williams Cone is a cinder cone on the northeastern flank of Mount Edziza in Cassiar Land District of northwestern British Columbia, Canada. It has an elevation of 2,100 metres (6,900 feet) and is one of several volcanic cones in the Desolation Lava Field at the northern end of the Big Raven Plateau. Situated southeast of the community of Telegraph Creek, it lies in Mount Edziza Provincial Park, one of the largest provincial parks in British Columbia. A roughly 13-kilometre-long (8.1-mile) lava flow travelled down the northern side of the Big Raven Plateau from Williams Cone around 630 CE and temporarily dammed the Klastline River. Ejecta from an eruption column was blown eastward by a strong westerly wind, some of which deposited on the eastern flank of Williams Cone.

Williams Cone is part of the Mount Edziza volcanic complex, which consists of diverse landforms such as shield volcanoes, stratovolcanoes, lava domes and cinder cones. A large, steep-sided feature on the western side of Williams Cone resembles an amphitheatre and contains a smaller, nested cinder cone. Tsecha Creek originates adjacent to Williams Cone and is part of the Stikine River watershed. Surrounding Williams Cone are a number of other volcanic features, including the Eve, Moraine, Sidas, Sleet, Storm, Twin and Triplex cones, all of which are also part of the Desolation Lava Field.