Big and Little Indian Rock Petroglyphs is a prehistoric archaeological site in the Susquehanna River in Conestoga Township, Pennsylvania, consisting of two large carved rocks. Big Indian Rock, about 60 by 40 feet, bears figures on all sides, while Little Indian Rock, about 38 by 32 feet, is carved on its north side. First studied in 1934, the petroglyphs are believed to have been made by an Algonquian tribe. The site was placed on the National Register of Historic Places in 1978 as a rare surviving example of prehistoric rock art in the region.