In a process similar to the formation of the Hawaiian islands, the Galapagos (along with associated hotspot) appear to be created from a mantle plume.
Wolf is situated at the northern end of Isabela Island in the Galapagos, and sits on the Equator, one of six coalescing volcanoes that make up this island (the others being Ecuador, Darwin, Alcedo, Sierra Negra, and Cerro Azul).