Bladensburg Dueling Grounds is a small spit of land , a fraction of its original size , along Dueling Creek , formerly in the town of Bladensburg , Maryland , and now within the town of Colmar Manor , just to the northeast of Washington , D.C. , United States .

Bladensburg Dueling Grounds is a small spit of land , a fraction of its original size , along Dueling Creek , formerly in the town of Bladensburg , Maryland , and now within the town of Colmar Manor , just to the northeast of Washington , D.C. , United States .

Dueling Creek , formerly known as ' '' Blood Run '' and `` The Dark and Bloody Grounds '' , is a tributary of the Anacostia River , which was formerly , called Name_conferral the East Branch Potomac River .