Casalis State Forest encompasses 228 acres of forest, trails, pond, and streams. The parking area is located one mile from Route 101 on Route 123 toward Sharon. The main trail passes a scenic pond and wetlands, proceeding easterly to Town Line Brook, which cuts through a mature hemlock forest. A rugged bushwhack upstream leads to a dramatic mini-gorge. A left fork a few hundred yards past the pond meanders in a northeasterly direction to Condy Road, approximately 1.5 miles from the parking area. The property was donated to the state by Isabel Adams Bross Casalis.