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originally posted by: Vasa Croe
Ok....so this one has me baffled. How does this form naturally? It appears hollow through the center and you are able to see the rocks behind it, but I can't understand how this could naturally form in this fashion here.
originally posted by: SlapMonkey
a reply to: Vasa Croe
It's a smaller rock in front of a larger rock...lighting and shadows explain the optical illusion pretty easily.