I think www.nedirtbikes.com, which is down right now, has a few pics of a spot above 495. NEDB also has lots of local footage and a handful of ones from wrentham.
Most of them are in the archives if you can find 'em, here are a few from around here that i know of, most of them are from the last enduro...
http://www.nedirtbikes.com/media/old/KenBgrasstrack.mpg
http://www.nedirtbikes.com/media/old/Lykke-MasonMudHole.mpg
http://www.nedirtbikes.com/media/old/MasonRocks.mpg
http://www.nedirtbikes.com/media/old/NashcarMudHole.mpg
http://www.nedirtbikes.com/media/old/NashcarRocks.mpg
and...
http://www.nedirtbikes.com/media/old/poopch.mpg
Which is a video of tunnels under 495...
Theres a lot more too, check it out if you havent already!