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A lost chunk of ancient continent is sucking bits of North America into Earth's mantle
Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...
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7 Most Mysterious Ancient Artifacts Ever Discovered In America
Many ancient Mayan city ruins across Central America are open ... Maze Stone remains one of the most enigmatic petroglyphs in North America. The perfectly geometric swastika-like maze design ...
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One Of The Coolest Places To See Architectural Ruins In America Is A Southwest Outdoor Playground
A staple of the town is the Aztec Ruins National Monument, an UNESCO World Heritage Site. Walking among these ancient ruins ... the Great House's north wall perfectly lines up with the sun ...