Julie Schablitsky was frustrated. The archaeologist and her team had spent two weeks digging in Peters Neck, Maryland, last November. They were looking for the site of a cabin where the famous abolitionist Harriet Tubman once lived. Land records from the 1800s showed they were in the right spot. But after digging more than 1,000 test pits, they were still empty-handed.
Schablitsky grabbed a metal detector and walked down an abandoned road. Suddenly, the machine beeped, alerting her that something was buried beneath her feet. The object she dug from the ground was a coin from 1808—the year Tubman’s parents were married. Schablitsky knew she was on the path to uncovering an important piece of history.