Sourland Mountain Preserve

The Farr family has donated over 3,000 acres to the Sourland Mountain Preserve and the Somerset County Parks Commission.

Several biology courses at Hillsborough High School take field trips to the preserve to encourage students to visit and appreciate it.

The main feature of the preserve is the 5-mile (8.0 km) Ridge Trail [white squares], suitable for hiking and off-road biking.

While located in a suburban section of central New Jersey, Sourland Mountain is a heavily wooded and rocky place.

Opened in 2007, a new extension to the Ridge Trail takes hikers to Roaring Brook and one of the finer boulder fields of the Northeast.

In 2009, a newly blazed trail system runs north from Roaring Brook before turning east and back into the preserve.

Geologically, Sourland Mountain is composed of sedimentary and igneous rocks of Late Triassic and Early Jurassic age, and are part of the Newark basin rift lake system.