Fristoe Trail

The Fristoe Trail provides a ridge-walking experience along the backbone of the Pere Marquette limestone bluffs, traversing a section of the park that sees significantly less foot traffic than the overlook trails closer to the main lodge. The trail follows the ridge crest through open oak woodland before descending into hollow forests of maple and beech on the sheltered north-facing slopes, creating a dramatic contrast in vegetation and microclimate within a short distance. The route passes above a great blue heron rookery visible in the tree canopy below the ridge — one of the largest heron rookeries in the Illinois River valley, with dozens of large stick nests visible in the dead cottonwood snags from late February through August. The herons are active and vocal during nesting season, and the cacophony from the rookery is audible from the trail above. The ridge section of the trail provides intermittent views of the Illinois River through the tree canopy, with longer views available during the leaf-off season from November through April. Wildflowers are exceptional in the hollow forests in spring, including large-flowered trillium, wild blue phlox, and Dutchman's breeches. The trail is blazed but requires some navigation attention at unmarked junctions on the ridge.