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The layers of dirt in the Unalaska area are particularly interesting and constitute a dynamic puzzle, according to Hatfield. She said that the layers have remained intact more than other regions simply because there hasn t been as much disruption from things like plowing or livestock on the island. And that preservation, she said, can give clues to intriguing and detailed histories.
With the help of other professionals, like ecologists and geologists, Hatfield said she s able to look at layers of dirt and other artifacts from archaeological excavations to paint a bigger picture of how people lived thousands of years ago.