(IN-06-03) N. of Zionsville, Union Township, Boone County, IN. US421 N. 6.3 miles from jct with IN334/116th St. E. of Zionsville, E. on IN32 (Base Line Rd.) 1.55 miles to the sign on the N. side of the road. (N40 02.549 W86 15.403)