caldeiras

Updated: May 29, 2025

In Fayal and Pico the most careless observer from the anchorage of Horta can scarcely fail to associate the number of smooth conical hills with former volcanic activity; and in looking over Captain Vidal's beautiful charts of the Azores, nearly all the principal hills throughout the group are seen to have their craters or caldeiras.

John MacGillivray - Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. : Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2

Fayal exhibits a fine specimen of one of these caldeiras in the central and highest part of the island. At an elevation of a little more than 3000 feet, we reached the ridge forming the margin of a circular crater, rather more than a mile in diameter, and 700 feet deep.

John MacGillivray - Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. : Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 2