What's the song you think of when you think of "Pink Floyd"? Walk along the river that is the north boundary of Lo de Marcos and you'll not only see birds and maybe some wildlife, you can find a cache to add to your list. A small tupper-ware type container, with a log book and pencil, with easy access from the road. You can't drive a big vehicle here, but a golf cart or bicycle can navigate this easily. No elevation... it's an easy, short walk from the town square.