Located on Black Point Road next to Camp Ketcha, Libby River Farm Preserve features woods and field trails and an observation deck overlooking the Libby River marsh, part of Scarborough Marsh.

In 1996, Scarborough Land Trust purchased 125 acres from the Larrabee family, who had a saltwater farm there for many years. 50 acres were deeded to the State of Maine to add to Scarborough Marsh. The remaining 75 acres became Libby River Farm Preserve. In 1999, the Lucy R. Sprague Memorial Trail was created. Camp Ketcha generously provides a parking area and access trail to the Preserve. In 2007, Eagle Scout Bryant Shannon built the observation deck that overlooks Libby River marsh.