This has a network of trails with paved roads leading to campsites. Not a lot to do here but does have a good size descent to cap off the day. This is a pretty good stop for backcountry skiing if you're also into that.
Right off of I-95/I-128 at exit 27 at Totten Pond Road, then take a right at Glen Road. There are a few areas to enter from but this is the easiest.
http://www.singletracks.com/item.php?c=1&i=4829