This loop is a nice walk through some not often traveled areas. Take the Red DEC trail from the Upper Works Parking Lot at Tahawus At about 1.5 mi. cross Calamity Brook on a bridge and take the Blue trail north. At about 1.5 mi. more you will meet Indian Pass Brook coming in on your right. Henderson Lean-to is on the west side of the brook. A nice place to take the kids for a first overnight or just for a picnic. Follow the trail south back to the parking lot.