A 5,000-plus-acre state forest in the Bridgewater Triangle, the site of a notorious 1978 murder and decades of regional crime and folklore.
110 Slab Bridge Road, Assonet, MA 02702
Research updated June 2026
Age
All Ages
Cost
Free
No entrance fee for the forest. Some seasonal or facility-specific fees may apply.
Access
Limited Access
Mixed woodland; more than 50 miles of unpaved roads and trails, including ORV trails. Uneven, remote terrain.
Equipment
Photos OK
Est. 1913 · One of southeastern Massachusetts's largest state forests, established 1913 · Central to the Bridgewater Triangle regional folklore · Site of the 1978 Mary Lou Arruda homicide and other documented crimes
The Freetown-Fall River State Forest was established in 1913 and today spans more than 5,000 acres across the southeastern Massachusetts towns of Fall River, Freetown, and Lakeville. It is managed by the state for recreation, with over 50 miles of unpaved roads and trails used for hiking, biking, cross-country skiing, equestrian use, and off-road vehicles.
The forest lies within an area popularized in regional folklore as the Bridgewater Triangle, a stretch of southeastern Massachusetts that writers and paranormal enthusiasts have linked to unusual sightings and reports since the late 20th century. That reputation is bound up with a real and sobering record of crime in and around the forest over several decades.
In September 1978, Mary Lou Arruda, a 15-year-old from Raynham, was abducted; her body was found in the forest that November. James M. Kater was convicted of the kidnapping and murder in 1979. The case moved through multiple appeals and retrials over the following two decades, with the conviction ultimately upheld. Kater died in prison in 2016.
Other incidents have been documented in and near the forest, including a 1987 killing, a 2001 double homicide on Bell Rock Road, and assorted reports of assaults, dumping, and vandalism across the 1980s through the 2010s. The combination of a large, isolated woodland and this documented history is what has fixed the forest in the region's darker reputation, alongside accounts of alleged occult activity that circulated in the early 1980s.
Sources
Within the lore of the Bridgewater Triangle, the Freetown-Fall River State Forest is treated as one of the most charged sites in southeastern Massachusetts. Writers and local accounts describe a sense of foreboding among hikers, scattered reports of figures and sounds in the deep woods, and the broader claim that the area sees more than its share of strange events.
Unlike many haunted locations, the forest's reputation grew less from a single ghost story than from an accumulation of real, documented crime. The 1978 Arruda case, later homicides, and reports of occult or cult activity that circulated in the early 1980s gave the woods a grim association that has been amplified in podcasts, books, and regional reporting on the Triangle.
Visitors looking for paranormal claims will find them in the folklore, but the more honest description of this place is a large, remote public forest whose dark history is a matter of court record rather than legend. It is best approached as a recreation area with a sober past, not a haunted attraction.
Media Appearances
The forest offers more than 50 miles of unpaved roads and trails for hiking, biking, cross-country skiing, equestrian use, and off-road vehicles. The terrain is remote; visitors should stay on marked trails, bring a map, and not count on cell service.
Every HauntBound history is researched from documented sources. We clearly separate verified historical fact from paranormal folklore.
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