The Glacial Drumlin Trail runs from Cottage Grove to Waukesha, along the hills that were formed under the great continental ice sheet. The trail crosses the Koshkonong Creek five times. It crosses the Crawfish and Rock Rivers on large iron bridges. Two miles north of the trail just east of Lake Mills, is Aztalan State Park. This park was once the site of a Native American Village that thrived for hundreds of years. Between London and Lake Mills, a herd of buffalo is located just north of the trail. The towns of Cambridge and Lake Mills are a bit off the trail, but they both have interesting historical buildings and shops. Near Jefferson, there is a 4 mile stretch of highway connecting the east and west sections of the Glacial Drumlin trail.