Many New Yorkers are oblivious to the existence of a mass grave right below their feet. The AOL series “What Remains” did a fantastic episode on the Fort Greene Park in Brooklyn, New York. The crypt in the park holds over 11,500 bodies of POWs from during the American Revolutionary War. Take some time to watch this episode and learn how the abandoned bodies, left to time on the sandy banks of New York City, made their way to be interned in the Fort Greene crypt.