Park at the quarry Trailhead on Pebblestone Drive. If you have always wanted to find a fossil you're going to the right place. Once an active quarry this cache is surrounded by 450 Million-year-old fossil beds from the Ordovician Period. If you hunt in the purple limestone in this area you can find Corals, Bryozoa, Porifera, Brachiopoda, Gastropoda, Cephalopoda, Crinoid Stems, and Trilobites. Most commonly found are the corals (they look like honeycombs) and Brachiopods which are clam-like shells, as well as Horn Coral, which look like conical "teeth". For more information about the fossils in this location scan the QR code on the cache.