San Cristobal is home to a small town, Puerto Baquerizo Moreno, and the Junco Lagoon, located 700 meters above sea level. El Junco has been the object of a study in which the sediments on the bottom of the lake were analyzed to uncover information about the vegetation and climate of the archipelago thousands of years ago.

Fast Facts: San Cristobal is the only island where three different species of booby birds and the great frigatebird can be seen nesting in the same area. Animals: blue-footed, Nazca, and red-footed boobies, frigatebirds Area: 1.9 sq. mi Highest Point: 1204 ft