I have spent dozens of nights in Harriman, mostly 4 day/ 3 night loops. Pure backcountry an hour North of Manhattan. Carry in/ carry out. Bring water purification. Water is abundant in cooler months, but expect to purify lake water in Summer. Camp in or around shelters. Hang you food or carry a bear canister; black bears do inhabit Harriman/ Bear Mountain. Pick up NY NJ trail Conference Map set #118-119. Carry/apply insect repellant to repel deer ticks that carry Lyme disease.