The Bainbridge Rocks are a group of small rocky islets off the southeastern coast of Santiago Island, in Galápagos Archipelago. One of these islets is a volcanic crater, composed of compacted volcanic ash. Sea water had permeated the walls of this eroded crater, forming a spectacular turquoise colored salt-water lake that entices huge flocks of flamingoes. This is also a great snorkeling site which trail leads to a coastline with gorgeous tide pools and grottos full of fauna. The Galapagos Islands are an archipelago of volcanic islands adjacent to the equator in the Pacific Ocean, around 1,000 km from the South American continent and part of Ecuador. The exciting isolation of the islands and the adjoining marine reserve, situated at the confluence of three ocean currents, has led to the development of unusual animal life and massive number of endemic species that piqued the interest of Charles Darwin during the voyage of the Beagle in 1835. His observations of the flora and fauna on Galapagos Islands led him to grow the famed theory of evolution by natural selection.