Resting approximately eight miles southeast of Santa Cruz, the relatively small island of Santa Fe is one of the oldest islands in the Galapagos archipelago with rock formations below the water’s surface dating back almost four million years. The island is best known for its endemic Barrington Land Iguana as well as its towering prickly pear cacti which have been known to reach remarkable heights of up to 20 feet. The magnificent Barrington Bay is the only visitor site on the island. There are two hiking trails that start here. One leads to a scenic viewpoint atop a cliff and the other wends through a forest of gigantic opuntia cacti. The beach is popular with sea lions and is an excellent spot from which to snorkel the radiant blue-green waters. You may even spot a Galapagos green turtle gracefully swimming by.