(60', 1974, SD-63-03) SW of North Sioux City, Big Sioux Township, Union County, SD. Dakota Dunes Blvd W. 0.1 miles from jct with I29 exit 1, N. on Sioux Point Rd. 0.5 miles, W. (curves SW) on Flurie Rd. 1.0 miles, NE on Hoffman Rd. 0.1 miles, SW (curves SE) on Edgewater Ln. 0.3 miles to the house on the SW side of the road at 19. (7-10-09, N42 30.327 W96 31.176) Photos by Jack Schmidt.