United States, Arkansas, Phillips, Mississippi Alluvial Plain. Louisiana Purchase State Park and Natural Area. On western boundary and adjacent forested, non-swamp land. Extreme northwest Phillips County. Monroe Quad T1S R1E S6 NW 1/4
34.64159 -91.046557 +-603m. WGS84
Used ESRI USGS Topo USA (faster) map, placed point in T1S R1E S6 NW4 in NW corner of Phillips County.