Ring Mountain, also known as Crucible Dome, is a tuya in the Mount Cayley volcanic field, British Columbia, Canada. It features a horseshoe shaped crater on the east side of the upper Squamish River. Outcrops on Ring Mountain's western side contain highly variable, fine-scale jointing and are locally broken down into many small spires and knobs. The age of Ring Mountain is unknown, but it likely formed during the Fraser Glaciation, as did most tuyas in Canada.
See also Mount Cayley Garibaldi Volcanic Belt Cascade Volcanoes Volcanism of Canada Volcanism of Western Canada
References
External links Catalogue of Canadian volcanoes: Ring Mountain