The Three Rivers Trail is a 30-mile rails-to-trails system. The trail crosses the west and east fork of the Des Moines River and runs through various habitats from the wooded river sides to the open farm and prairie lands. Activities on the trail range from walking/hiking and biking during the summer months to cross country skiing and snowmobiling during the winter. For more info call the Humboldt County Conservation Board at 515-332-4087.