Point taken that you could do it. But I kind of doubt that is what he has in mind. Something where the descent actually fits into the hike would probably be better. Not too many places in the gunks fit that, There might be places in the Catskills. The only New York site I have seen with routes having actual "canyoneering" type descents is in Whetstone Gulf up on the Tug Hill Plateau. Not exactly a destination mecca for foreginers though.