Pound Ridge Town Park - At the Town Park, there are ball fields, tennis and basketball courts, delightful playgrounds, swimming pools, as well as benches and grills for picnicking. A nice 1.5 mile walking path leads from the park into the town where you can find boutique stores, indoor/outdoor dining, and more.
Start at the fire pit located above the baseball field, make your way to the basketball courts and, using the provided hint, search for a medium ammo can cache. The contents are a log book and pen, and a variety of items including, when placed, a trackable attached to an orange pony.