On Kilauea, several aa flows meander along gentle slopes, then cascade down the steep pali. Clinker falls forward, exposing the hot molten interior of the flows; vegetation is buried. Footage shot in 2008 (private property) and in 1992 & 1993 (above Kamoamoa, in HVNP). Video shot & edited by UHH Center for the Study of Active Volcanoes (CSAV). Why does Hawaiian basalt sometimes produce pahoehoe flows, and other times aa? Please read this pdf article for details on the difference between aa and pahoehoe: pubs.usgs.gov/pp/pp1676/pp1676_05.pdf

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