Discover Martin Brook Park, where a gazebo sits on a hill above a waterfall beside a river that's filled with frogs. The cache is just your basic pillbox with logsheet, but the spot is special and you'll be glad you visited. After you find the cache, walk a few yards down the road to the bench beside a second waterfall, or take a hike in the trails in the woods. Claire recommends that you catch a few frogs if you're fast and agile, but put them back before you leave!
Cache is in the space below the roof in the southwest corner of the gazebo. You'll need to climb on the picnic tables to get to it (hence the 2.5 terrain rating). If the tables are removed for the winter, you can probably manage with a leg-up. Replace the cache as found so it doesn't fall into the space behind the frame; you'll have a heck of a time getting it out if it does!