You will find Rock Island to be rugged and scenic, yet very friendly for hiking. There
are well-marked nature trails, and a park naturalist offers his knowledge of plants,
geology and the history of Rock Island’s early inhabitants.
Two unique structures on Rock Island provide a wonderful historical perspective—the
Pottawatomie Lighthouse and the C. H. Thordarson Boathouse. The boathouse immediately
adjacent to the boat landing on Rock Island and is open daily for self-guided visits.
In season, docents who live in the lighthouse will educate visitors about Rock Island’s
light keeping history. Excellent books have been published that describe Rock Island’s
history. These books describe the periods of early native inhabitants, French voyageurs
(including LaSalle), the fishing village pioneers, and the Rock Island estate of C. H.
Thordarson—all of which predated the Rock Island State Park.