John,
I'll be heading out to Nelson's Ledges this weekend(only a half an hour away and I've never been there!? The picture you mentioned is what got me thinking about it). I have a feeling I'll be getting to know it quite well by the time the event rolls around, might even be my next project. If so, and there is interest, I'd be happy to take a group and show them around the area come next fall. Best. Shawn