The Slave MeadowRead the whole thing. If memory serves, there is a marker at the site now recognizing the slaves' burial plot.
Unmarked Graves on National Park Service Land
by, Bob Heafner, The Mountain Laurel
They accompanied the Steptoe Langhorne family to the tiny mountain community of Meadows of Dan, Virginia, in the mid-nineteenth century. The Langhorne family owned thousands of acres in the area prior to the Civil War. They were slaves and by some accounts there were twelve or thirteen of them; by other accounts, only four or five. Little, if anything, is known about them, but two facts are certain, they were slaves and this meadow is their final resting place.
... sixty years ago, when the Blue Ridge Parkway was built, the National Park Service acquired that portion of the cemetery where the slaves are buried.
Buried in this picturesque mountain setting, is not only the Langhorne slaves but the symbolic remnants of black history in the Blue Ridge. These pioneers have passed into the oblivion of time unknown, their lives and contributions all but forgotten. They lived without benefit of freedom and now in death they face eternity without the final human dignity of a simple stone marker to acknowledge their lives.
Old man Matt Burnett, told me about the graves before he died and recalled why there were no markers. During the construction of the Blue Ridge Parkway the markers, which were just simple stones, were carried into the woods at the edge of the field to "get them out of the way” during construction. The intent was to put them back when they were finished but no one ever got around to it. (link)
It's a remarkable story.