Bluffton Fir Stand is a 94-acre preserve featuring a sheer limestone bluff up to 140 feet high that contains one of the largest populations of balsam fir in Iowa, a “boreal” tree species typically found much farther north in Minnesota, Wisconsin, and Canada. It is located in Winneshiek County eight miles northwest of Decorah, directly south of the town of Bluffton. Bluffton Fir Stand was dedicated as a biological and geological state preserve in 1969.