Summer is a busy time of year at Effigy Mounds National Monument. The visitor center is now open daily from 8 a.m. to 6 p.m. with an introductory movie, museum and bookstore within. Trails are always open from sunrise to dusk. Ranger-guided hikes, walks, or talks will be offered twice each day beginning Sunday, June 16 through Labor Day, September 2, departing from the visitor center at 11 a.m. and 2 p.m.