Ancient petroglyphs

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Rock cuts, or possible petroglyphs Oldest Civilization, Mountain Building, Prehistoric Cave Paintings, American Colonies, American Continent, Mountain Living, Ancient Origins, Cave Paintings, Appalachian Mountains

The Appalachian Orogeny is one of the geological mountain building events that created the Appalachian Mountains. This orogeny occurred about 325 million years ago and was caused by Africa colliding with North America at a time when these continents did not exist in their current forms. It applied massive stress on what is today the Eastern Seaboard of North America, forming a wide and high mountain chain.

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