according to the birchmere, this is how you get there:
From Washington DC
14th sreet south across 14th street bridge.
Take left hand exit for Rte 1 South.
Follow Rte 1 thru Crystal City, to stoplight at Glebe Rd.
Turn right onto Glebe Rd.
Follow to second stoplight, turn left onto Mt.. Vernon Ave.
Go approx .4 miles & we're on the left, just past the AutoZone, at 3701
nothing about trails.