At the posted coordinates, you'll find three things:
1. For the kids - an easy-to-find "decoy" ammo can filled with fun swag to trade.
2. For the parents - a smaller/tricker actual cache container with the logbook and a Bike_Hike coin for the first 5 finders. You should find this to mark the cache as found.
3. For the curious explorers & benchmarkers - a brass survey marker disk atop a concrete pedestal, placed for the SE Wisconsin Planning Comission in 1994:

