From "Laurel Hill Walks" [Click here]
Comment: It is very nice to see stone features receiving some attention. But the article appears to be saying that stone circles and archeo astronomy-related rock piles are 12,000 years old because they are found near flakes of jasper, related to Paleo Indian tool production. That does not pass even a basic sniff test. For example I have found Paleo Indian flakes in close proximity to a parking lot. Needless to say, the parking lot is not 12,000 years old.