Wikipedia tells us: "Along with other islands in the Azores archipelago, Faial is of volcanic origin and is close to the tectonic divide between the European and North American Plates. Indeed, the island can be considered (from a geophysical perspective) the westernmost point of Europe (the two islands west of Faial, Flores and Corvo, are already on the American plate)." The town of Horta is at the southeastern corner. The most recent volcanic activity (1957-8) added some surface area to Faial at its westernmost point. See images in this gallery.

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