Found by Mary & David, from Melbourne, Australia, at 1410. This looks like an interesting trail, but we're on a fairly limited schedule on this trip, so couldn't explore much. Even so, we were fascinated to take even a short walk in such an ancient area. We wondered if the two rocks at the trail head near the Ruger Av / Greendale Dr intersection were glacial erratics, or a landscaping addition. Found the cache on the ground, but not visible from the trail. Replaced it where we found it. Our thanks to Zam-n-Britt.