The Peppercorn Conservation Area is located on the east side of Upton near North Pond. The 283 acres area is largely forested with oaks, maple, and pine. It features cold water streams, wetlands, vernal pools, scenic vistas, and stone walls. The western slope of Peppercorn Hill is a remarkable jumble of boulders deposited by glaciers more than 10 thousand years ago. A National Grid powerline easement passes through the property and the shrub habitat maintained by the easement provides excellent songbird and butterfly habitats. Trails can be accessed from Crocket Road and from Taft Street via the Snow Family Conservation Area.

The AllTrails website has a description and map of a hike at Peppercorn Hill.