The trails are on what is called Millstone Hill. Over a century ago, it was bustling with rock cutters harvesting granite from multiple quarries. Now, with only the Rock of Ages quarry in operation, nature has reclaimed most of the hill. The network of trails is divided into three sections; Barre Town Forest, Gnome Man’s Land, and Canyonlands. The Millstone Trails Association maintains the trail system. There is also a popular 18-hole frisbee golf course, and some trails are open to horseback riding and cross-country skiing.
For parking, I would use the centrally located lot at 44 Brook Street, Websterville, VT. This lot gives easy access to Barre Town Forest and the Grand Lookout. Hiking is free, but mountain biking is $10/person to help support the trails. Passes are available on the MTA website.