Location: Manhattan, USA
Year Discovered: 1991
Est. Value: Unknown
Imagine a seemingly routine building site uncovering mountains of human remains. When workers discovered human bone remains around 9 meters underground in Manhattan in 1991, it looked like a sight straight out of a horror film.
A six-acre African burial site with more than 15,000 intact bones was later found by archaeologists, shedding light on the nation’s sordid colonial past.
The reasons of death of the remains, which are believed to have existed between 1630 and 1795, have never been determined.