Exit 32 off Int 93; go East (Rt 112) for 1.6 miles turn left at sign for Forest Ridge Development. Go past Lin-Wood Town Park up hill into Forest Ridge. At top hill road bends left and there will be a large stone wall directly in front of you. There.
Drive up Highway 49 toward Waterville. Shortly after the historic Sandwich Notch Road veers off to the right, you'll see the fairly large parking area for the Smarts Brook Trail on the right side of the road. Park there. All climbing is off trail
This is a secluded shady area that does not see much traffic due to getting there and old school bolted routes w/ some new fixed protection. At the Map kiosk before boulder natural, cut left into the woods for about 5-10 min. Stay more right.
Park in the small gravel lot off of Purgatory Rd in Lyndeborough. Lot is on the left coming from Fitches Corner. Follow the only trail back to the waterfall. Boulders are directly at the waterfall and more are along the river.