The Grand Valley Preserve is gated and you must secure a pass key to enter the preserve. The gravel pits have been viewed from nearby roads for many years by area birders.

The Camp Dennison Gravel Pits, also known as The Grand Valley Preserve, a former gravel excavation site, was acquired by the Village of Indian Hill in 2002. Located in Camp Dennison, the 379-acre site has been the focus of a reclamation project to restore wildlife and the Preserve’s natural beauty.