Tags: Mountain Range.
The Volcan Mountains are a mountain range of the Peninsular Ranges in San Diego County California. The Volcans are a northwest–southeast range with an approximate length of 13 miles (21 km) and width of 7.5 miles (12.1 km). Lake Henshaw is just to the northwest. San Felipe Valley and the San Felipe Hills lie to the east. Julian and the historic Coleman gold mining district lie on the southern margin of the range.