Trempealeau, Trempealeau County. July, 1969. Altitude c. 3,000 ft. This high oblique view to the northern horizon features a lock and dam (No. 6) on the Mississippi River, Trempealeau Mountain (an isolated bluff) at center, and the village of Trempealeau at lower right. Trempealeau Mountain is within Perrot State Park. Bluffs along the west side of the river valley in Minnesota are visible at upper left.