Flint pebbles from the beach in Etretat
Pebbles from Etretat's beach (Normandy, France).
These pebbles have been rounded (attrition) by waves for a long time. Indeed, there are neither sources nor sinks since thousands years.
Taken on 29
Submitted on 17 February 2017
Credit: Vincent Regard (distributed via imaggeo.egu.eu)
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