From a vantage point on top of the cone 200 feet above mesa, the alignment of the 5-mile-long chain of vents is particularly noticeable. Vulcan is a spatter cone, formed primarily by fire fountains that were active in the central vent and in smaller vents on flanks of the cone.
Viewed from the summit of the cone, 200 feet above the mesa, the linear arrangement of the 5-mile-long chain of vents is particularly noticeable. Vulcan is a spatter cone shaped mainly by fire fountains operating in the central vent and smaller vents on its flanks.