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Articles on Land surveying

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A variety of clues can tip off archaeologists about a promising spot for excavation. Gabriel Wrobel

How do archaeologists know where to dig?

Archaeologists used to dig primarily at sites that were easy to find thanks to obvious visual clues. But technology – and listening to local people – plays a much bigger role now.
The orientations of the stone walls that crisscross the Northeastern U.S. can tell a geomagnetic tale as well as a historical one. John Delano

Old stone walls record the changing location of magnetic north

Scientific inspiration struck a geologist after many walks through the woods in New York and New England. These ruins hold the secret of where the compass pointed north when they were built centuries ago.

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