Take a step back into history with this unique paddling experience! Located on the Susquehanna River just south of the Safe Harbor Dam is one of the largest concentrations of petroglyphs in the Northeast U.S. Found primarily on two islands named Big Indian Rock and Little Indian Rock, these petroglyphs are thought to be as many as 1,000 years old. The Algonquian people created these rock carvings that can still be enjoyed today, accessible only by kayaks, canoes, or small motorized boats.