From Vineyard Haven Ferry:
Apple Maps has it right. Google maps has it wrong. Turn left out of ferry terminal, take a right onto State Road on 5 Corners Intersection, continue on State Road into West Tisbury (2.3 miles), turn left onto Stoney Hill Road (sign for South Mountain Company), continue on Stoney Hill Road (0.30 miles), turn left onto Red Arrow Road and follow it until the end.
Apple Maps has it right. Google maps has it wrong. Turn left out of ferry terminal, take a right onto State Road on 5 Corners Intersection, continue on State Road into West Tisbury (2.3 miles), turn left onto Stoney Hill Road (sign for South Mountain Company), continue on Stoney Hill Road (0.30 miles), turn left onto Red Arrow Road and follow it until the end.