This is the front of a fairly large A'a lava flow.
This part of the flow was slowing down and would eventually stall but, that allowed me to film without having to constantly retreat.
You will see how an A'a flow advances.
The inner core is fed by a very large river of lava about a 1/4 of a mile back that was cascading down a steep pali (cliff).
As the flow reaches an area of resistance the flow rises in height.
A'a flows generally run at about 1700f. The outer portion cools in jagged pebble
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