The Northern Virginia Carvers will have their Woodcarving Show at
Colvin Run Mill
10017 Colvin Run Road
Great Falls, VA 22066

That's off Route 7 towards Leesburg from Tysons.

Park Site:
http://www.co.fairfax.va.us/parks/crm/index.htm

NVC Site:
http://www.angelfire.com/va2/nvacarvers/index.htm

Free to the public. Rain date 28 September 2003