The smallest and most isolated island, Corvo, with only 400 inhabitants, due to it's character is also known as "The Black Island". Today, you can hike Caldeirão, a lagoon which is a crater active around two million years ago, where emerge small islands resembling the Archipelago of the Azores. Try to spot the island’s famous birdlife - this is a home to several rare species, including warblers, shearwaters and vireos.