It's closed right now for the season, but October Mtn. just over the border in Lee, MA has some decent wheeling.
Check out Adirondack Jeeps Club - they'll have the 411 too
I live in hurley and there is really no where to go around here. it really sucks that there are not many places in ny to really do any four wheelin. Its sad but theres only one spot around me where people dont bust your hump but thats simply because the owner is a friend of the family
I applied to be a member of Adirondack Jeeps but they didn't get back to me, Apparently they have limited number of people to handle the applicants. I'll try again in the spring.