I was out checking on my other cache hides in this nice park, and had an extra cache with me. It's an Advanced Placement, so consider whether you're ready to take the Elves' AP Exam.
After you cross Little Sewickley Creek, follow the trail on the far side along the creek until you can't go any further. Then, start climbing. You'll be in a forest wonderland. You're hunting for a small lock 'n lock that holds a log and a few trade items. The cache started off with a trackable that came here with me all the way from the deserts of Jordan, and a special unactivated travel tag for the FTF.
Good luck, and I hope you pass your AP Exam!