Dana holds a hammer for scale over a set of normal faults forming a tight horst at Table Rock. Directly over the hammer, near the top of the photo, is a clast (actually two, the obvious one and another, smaller, to its right) that is much larger than anything around it. I suspect that was lobbed by an explosive blast at the actual vent, which would have been something like a mile and a half away.
Talk about nasty weather.
Photo unmodified. August 20, 2011. FlashEarth Location.
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