From Erie and Buffalo, and points North

Coming east or west on New York Route 17 /I-86, take exit 29 onto route 275 south
Take 275 to route 417 south
Take route 417 to route 305 south
Take 305 to route 446 south
Take 446 to route 155 south
Take route 155 thru Port Allegany, towards Emporium, seven 1/2miles after crossing bridge, look for Thorn Apple Farm on the left.
Look for the rock

From Pittsburgh and points South

Coming east or west on I-80 take exit 101 route 255 north
Take 255 north to St. Marys to route 120 east thru Emporium
At the junction of routes 120 and 155 at the far end of Emporium, take route 155 north
Go fifteen miles. Thorn Apple Farm is on the right side the road.
Look for the rock