The "Driftless Area". Shaded sandstone ledges and talus on Mississippi River bluff. Perrot State Park. Trempealeau County. Wis T 18 N; R 9 W; Sect. Trempealeau Twp., Iowa, United States, North America
Trampealeau Co., WnW of Trampealeau, Perrot State Park, W(river) side of road going from Indian Mounds to boat landing, 88 paces E of parking lot between the mounds and the landing, at the base of Brady's Bluff. T18N R9W S20 NW¼ of SW¼, Wisconsin, United States, North America