A cammo'd pill bottle, spawn of Mother of All Caches - GCPNTT. BYOP!
This is on a really lovely bike path in Balance Rock Park. Follow the blue blazed trail at the far end of the parking lot. Where the blue blazes go to the right, the trail you want goes straight. I found this spot and it certainly intrigued me, as I hope it does you. You should feel comfortable with heights for this one, and don't push it.