There are a lot of Geo-kiddos who hike to the Y, so I made this an easy, and safe, cache with them in mind. There's a Webkinz (with code!) for the first kiddo FTF, and a small note for the adult FTF.
At Turn 9, follow the deer trail to the south into the trees. Hang left. Look on the left side of the large boulder you see. You'll be looking for a Coleman drink cooler in the cleft of the boulder. Please rehide it well, as it's very conspicuous.