The Gun Position #6 marker is on private property in the Harpers Ferry KOA campground. The campground is on Campground Road, which runs west from Shenandoah Road (the road to the National Park Visitor Center).  (39°18’57.0″N 77°45’45.7″W; map) The markers are along the driveways in the campground.

From the marker:

Gun Position #6

This gun protected the south end of the fort and was positioned to fire on flank movements. An outside picket trench, which can be seen ahead of the main embankment, protected the artillery crew.

(go to the main Union Skimish Line page)
(go to the main KOA Campground page)