The Twins are located in the highlands of Santa Cruz Island, on the Puerto Ayora- Canal de Itabaca highway, in the Galápagos Archipelago. They are large depressions of volcanic material, formed by a long process of slow subsidence of the earth, where exceptional trees of scalesia, ferns, mosses, and orchids live there.
Some species of Galápagos Finches and often the beautiful witch bird live here.