Maps for most hiking trails can be obtained from the NY/NJ Trail conference (201-512-9348) at 156 Ramapo Valley Road, Mahwah, NJ 07430. www.nynjtc.org NY/NJ Trail Conference maps can also be bought at the Information Center on the Palisades Interstate Parkway in Bear Mountain (845-786-5003) between exits 16 and 17. And at the Hudson Highlands Nature Museum in Cornwall (845-534-5506). CAUTION. Some parks are closed to hikers during hunting season in November and December. Check with either the park or the Department of Environmental Conservation (845-256-3000) for restrictions.