Nelson and Dyas Units is a 4 mile loop trail located near Bellevue, Iowa that offers scenic views and is rated as moderate. The trail is primarily used for hiking and is best used from May until September.
The views are the main feature of the trails at this park. We hiked a total of six miles, covering portions of both the Nelson and the Dyas units. While there are some elevation changes, there is nothing else particularly challenging about the trails. Large sections are mowed paths or service roads. If you are limited for time, the Nelson Unit has the better trails.
Four trails provide a variety of hiking opportunities. One trail leads out to scenic overlook of the Mississippi, one winds past Indian burial mounds, one wanders through a restored prairie and a "Garden Sanctuary for Butterflies", and one takes you past an old limestone rock quarry.