A quick Google search turned up that Cowboys Food Mart in Damascus Virginia.
I think this is VA. The sign that says "In Memory of Nancy Minnick Gray" is for someone from Abingdon, VA. Thats only 22 minutes away. There are quite a few Elizabeth Widener's as well, but there is one from Damascus, VA.A quick Google search turned up that Cowboys Food Mart in Damascus Virginia.
111 Douglas Dr, Damascus, VA 24236
It is near the Mount Rogers National Recreation Area.
Edit: Actually it looks like there are other parks closer than Mount Rogers. They could have been at several different ones.
Acknowledging the tongue-in-cheekness...