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Unexplained Giant Tunnels Found—Largest Burrowing Land Ever Mapped
In southern Brazil and northern Argentina, scientists have discovered massive underground tunnels stretching for hundreds of ...
Massive tunnels have been discovered in South America, but what animal made them? Learn about the tunnels created by ...
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Ancient tunnels built thousands of years ago weren't made by humans, archaeologists discover
Huge ancient underground tunnels have been discovered in Brazil and Argentina, and the source of these huge structures is not believed to be due to humans or natural geological processes. Reaching ...
Researchers have found a "unique" collection of "cave pearls"—some of which contain archaeological artifacts—in an ancient tunnel, a study has reported. Cave pearls are a type of "speleothem"—a term ...
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