Nature
Opal Cone is a cinder cone on the southeast flank of Mount Garibaldi in British Columbia, within the Garibaldi Ranges of the Coast Mountains. Though part of the Cascade Volcanoes, it lies outside the main Cascade Range. It is significant as the source of a broad dacite lava flow about 15 kilometers long, an uncommon extent for a silicic flow. The lava’s prominent wrinkled ridges preserve visible evidence of the volcano’s eruptive history and make the cone an important volcanic feature in the region.
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British Columbia · Canada
