(Lakes at Red Rock, 56', 46-53-a) across Cattail Branch E. of Leesburg, Catoctin Township, Loudoun County, VA. VA7 E. 1.8 miles from jct with US15 on the W. edge of Leesburg, N. on River Creek Pkwy. 1.1 miles, W. on Mill Run Ct. to 18404. Bridge is behind the house. (N39 06.456 W77 30.501) Photo by Don Burnell 05-2003.