High Quality Content by WIKIPEDIA articles! Black Rock Forest is a 3,830-acre (1,550 ha) privately owned nature preserve in the western Hudson Highlands region of the U.S. state of New York. It is in Orange County, mostly in the town of Cornwall, with the southern fringe overlapping into the neighboring town of Highlands. It is managed for educational, recreational and scientific purposes by The Black Rock Forest Consortium, a group of similarly oriented organizations.