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Natural processes can make lots of structures that look artificial. See Giant's Causeway: https://en.wikipedia.org/wiki/Giant%27s_Causeway https://en.wikipedia.

Natural processes can make lots of structures that look artificial. See Giant's Causeway: https://en.wikipedia.org/wiki/Giant%27s_Causeway https://en.wikipedia.org/wiki/Giant%27s_Causeway

Normille 6y ago
"Worth seeing but not worth going to see" –Charles Dickens
p1necone 6y ago
And pyrite (fool's gold) crystals: https://en.wikipedia.org/wiki/Pyrite https://en.wikipedia.org/wiki/Pyrite