(Interpretive Center, ~110', 2003, ND-53-01) SW of Williston, Buford Township, Williams County, ND. US2 W. 5.4 miles from jct with US85 on the SW side of Williston, S. (curves W.) on SD1804 15.3 miles, S. on 153rd Av. NW 0.95 miles to the bldg ahead. (N47 59.107 W103 59.331) Photos by Jim Allen 9-10-17.