Leg 4 sent teams along the Underground Railroad. Teams woke up to find a facsimile copy of a Brooklyn Times newspaper. In the paper was a story written by Walt Whitman, directing teams to the Atlantic Avenue Tunnel in Brooklyn, New York. Team Miss USA was the first in the tunnel, the only entrance to which was a manhole. They found Civil War artifacts and lyrics to the slave song Follow the Drinking Gourd written on the tunnel walls. Among the artifacts were bundles wrapped in cloth, which Team Miss USA discovered but ignored. All other teams as they arrived recognized that the bundles were clues, consisting of a Don't Tread On Me flag, a copy of the Drinking Gourd lyrics and special glasses. The glasses revealed the words BENEVENTUM and GEORGETOWN SC in secret printing on the flag. The next destination was Beneventum Plantation in Georgetown, where the "Don't Tread On Me" flag was created. With the discovery of the destination, teams received a Motorola message that a $30,000 treasure could be claimed by the first team to reach an upcoming location. Team Miss USA realized their mistake in not taking a bundle and returned to the tunnel. Through it all a bluesman performed the song at the tunnel entrance.