Hickory Run State Park, Boulder Field: 14 acres of jumbled stone caused by severe weather of the last glacial period. The glacier end moraine crosses the park. Hickory Run State Park can be reached at Exit 274 off of I-80. Follow PA 534 east to the park. 570-443-0400

Seven Tubs Natural Area: Glacial meltwater eroded the bedrock and created a series of potholes in an area now called Whirlpool Valley. Owned by Luzerne County, Seven Tubs can be reached at Exit 164 off of I-81. Follow PA 115 south for 2.5 miles. The park is on the right. 570-477-5467

Tannersville Cranberry Bog: This 150-acre wetland is the southernmost low altitude boreal bog on the eastern seaboard. It contains carnivorous plants, rare orchids and other plants. The bog is owned by the Nature Conservancy and can only be visited during scheduled tours. 570-629-3061