Carbaugh Run Rhyolite Quarry Site (36AD30) - Credit: Wikimedia Commons
The Carbaugh Run Rhyolite Quarry Site is an archaeological site in Franklin Township, Adams County, Pennsylvania, United States. It is composed of two smaller sites: a group of small quarries on top of Snaggy Ridge, and the remnants of what may have been a campsite along Carbaugh Run below the ridge. Read more on Wikipedia
Source: en.wikipedia.org