United States, Wisconsin, Waukesha, Grotjen's Fen, below N side of old C.M.St.P.&P. Railroad, 3.7 mi. (airline distance; 5.0 mi. by road) due E of centrer of Palmyra. From Hwy 59, go S 0.5 mi. on CTH S to railroad (now Wisconsin and Southern RR), walk W along the railroad 0.6 mi.