Take I-495 to Route 2 west. Immediately take exit 39. Turn left at the end of the ramp onto Taylor St. Take your first left onto Porter Rd. and follow it to the end. At the end of Porter Rd., turn left onto Whitcomb Ave. (Whitcomb Ave. becomes Littleton County Road). After 1.3 miles, look for a driveway on the left side (small sign, dirt road, easy to miss). If you reach Old Schoolhouse Hill Rd. or Cleaves Hill Rd., you've gone too far.

The address of the entrance is: 250 Littleton County Rd. Harvard, MA (42°30'55.34"N, 71°31'56"W)

(Do not mail to this address, the post office will not deliver it. Use the mailing address at the contact page.)

Please do not speed! Respect the surrounding residential neighborhood.