The incident occurred here at the  Marine Corps Recruit Depot Parris Island, South Carolina, or more precisely in the swamp area at the depot.

The Ribbon Creek incident is the most common term for events which occurred on the night of April 8, 1956, when Staff Sergeant Matthew McKeon, a junior drill instructor at the Marine Corps Recruit Depot Parris Island, South Carolina, marched his assigned platoon into Ribbon Creek, a swampy tidal creek. The incident resulted in the deaths of six United States Marine Corps recruits. McKeon was found guilty of possession and use of alcoholic beverage.

• http://en.wikipedia.org/wiki/Ribbon Creek incident