The sulphur wave's black finger
Black rock sticking out from rhyolith rubble of the Brennisteinsalda (Sulphur wave) at Landmannalaugar, Iceland. The glassy black rock is the beginning of an obidian lava flow.
Taken on 13
Submitted on 01 December 2022
Credit: Claudia Wieners (distributed via imaggeo.egu.eu)
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