Submitted by Chinaskibedspin33 t3_10q8e3f in pics
pATREUS t1_j6p6t6t wrote
Reply to comment by MajCassiusStarbuckle in Large rock on Short Sand Beach. Near Cannon Beach, OR. by Chinaskibedspin33
Could be pumice stone. Ejected lava foam rapidly cooled into what is seen here; many variations of course.
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