Susquehanna Petroglyphs

Down in southern Lancaster County, where the river stutters through a few dams, there are a couple of rocks that have petroglyphs carved onto them. 
These carvings are anywhere from 400-1000 years old. There are Thunderbirds, serpents that mark the four equinoxes, swirls, various animals, human figures, and etchings that mark the Pleiades. It's a pretty incredible experience to pour water over dry rock and have these ancient symbols of language appear. ​

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