The greatest concentration of petroglyphs can be found at Piedras Marcadas. See up to 400 petroglyphs on this 1 1/2 mile round-trip hike off Gold Course Rd. For more information on park trails, check out our website at: https://www.nps.gov/petr/index.htm pic.twitter.com/AKXcR7TH5Y
12:41 PM - 15 Feb 2019
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