This hotspot may be used for the trails in the Castalia Quarry MetroPark on the north side of OH-101.

Offering a panoramic view of Sandusky Bay and the Lake Erie Islands from the observation deck, the rugged, yet beautiful terrain of the quarry is home to about 240 species of native plants, including some that are rare or threatened. You will also find fossils that date back 400 million years and glacial grooves! Since quarrying efforts ended in 1965, this once barren site is returning to a natural state.

The MetroPark is open to the public daily from 8 am to dusk, year-round. No drinking water is available on the site. Seasonal restroom facilities are located south of OH-101. The rough terrain of the MetroPark may be explored on foot or on a mountain bike. The Castalia Quarry MetroPark is the only MetroParks area in which mountain biking on the trail system is permitted. On a clear day, Perry’s Victory and International Peace Memorial on South Bass Island are visible from the top level of the Wagner Quarries Company Observation Platform.

Visitors are cautioned to stay on the marked trail and away from the edges of the quarry walls. For safety's sake, horses are not permitted in the MetroPark. Rappelling and rock climbing are also restricted.