Marble Hill Natural Area

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The Marble Hill Natural Area is a beautiful 288-acre preserve located just north of Phillipsburg along the Delaware River in New Jersey. It is owned by the County of Warren and managed for conservation and public use in partnership with several nonprofits. The area provides watershed protection to the Delaware River and habitat for many birds, especially neo-tropical and migratory songbirds that use the river as a flyway

The area has about 4 miles of trails that offer seasonal views of the river and the surrounding forest. The trails are open for walking, hiking, biking, horseback riding, and picnicking. You can also enjoy fishing and hunting (by permit only) in the area. One of the trails is part of the 32-mile Warren Highlands Trail, which crosses the county and connects various sites of interest.

The area is named after Marble Mountain, a ridge that runs along the river and is composed of dolomite, a type of limestone that resembles marble. The mountain has a rich history and was once quarried for its stone. You can still see some remnants of the quarrying activity along the trails.

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Marble Hill Natural Area

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