Harriman State Park, located in Rockland and Orange counties, is the second-largest park in the parks system, with 31 lakes and reservoirs, 200 miles of hiking trails, three beaches, two public camping areas, a network of group camps, miles of streams and scenic roads, and scores of wildlife species, vistas and vantage points. Harriman State Park's major facilities include Lakes Welch, Sebago, Tiorati and Silvermine, the Anthony Wayne Recreation Area, Sebago Cabins and Beaver Pond Campgrounds.
ROPE CLIMBING IS PROHIBITED IN THE PARK.
This park is huge and an area called the Master Bedroom was featured in Josh Lowell's, Dosage V. There are many areas of bouldering in the park. Satellite images show outcroppings and slabs along almost the entire SE edge of the park along with established areas with climbs up to V14 established by John Kootz, Matt Bosley, Ivan Green, and many other S. NY climbers. Within the park there are many erratics and outcroppings to occupy your time.
Follow directions on google, parking is located on Seven Lakes Dr.