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Comparison of Obsidian Dome in the Long Valley Volcanic Region and Hangar One at Moffett Field (CalVO location)

By California Volcano Observatory February 2020 (approx.)
Two photos are stacked for comparison. On the top, a rubbly lava dome looms high above a forest of dark green pine trees, spreading its gray and black rocks over the landscape like a pile of toothpaste. On the bottom, the metal skeleton of a huge blimp hangar stands on a concrete airfield, with a helicopter and pilot in the foreground. They are dwarfed by the massive structure.
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Detailed Description

Obsidian Dome in the Long Valley Volcanic Region is about 0.1 km³ in volume, while Hangar One at Moffett Field (the location of CalVO) is about 1 million m³, or 0.001 km³. 

Sources/Usage

Public Domain.