United States, Arkansas, Washington, S.W. Washington County. Ozark Plateau: Foothills of Boston Mountains. Cove Creek Valley, about 15 miles south of Prairie Grove (23 miles S.W. of Fayetteville).
35.773526 -94.375506 +-90m. WGS84
Using Google Terrain map, measured from Prairie Grove south along course of Cove Creek 15 road miles. Drew polygon along course of north-south running valley. Placed pin in center area of polygon at that location and edited uncertainty radius.