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Stones on Lake Superior beach at Great Sand Bay in the Keweenaw Peninsula, Michigan
Public Domain.
Amygdaloidal basalt rock on Great Sand Bay beach on Lake Superior in Keweenaw Peninsula, Michigan.
Amygdaloidal basalt rock on Great Sand Bay beach on Lake Superior in Keweenaw Peninsula, Michigan.
Amygdaloidal basalt rock on Great Sand Bay beach on Lake Superior in Keweenaw Peninsula, Michigan.
Amygdaloidal basalt rock on Great Sand Bay beach on Lake Superior in Keweenaw Peninsula, Michigan.
