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The Rupes Nigra ("Black Rock"), a phantom island, was believed to be a black rock located at the Magnetic North Pole or at the geographic North Pole itself. Described by Gerardus Mercator as 33 French miles in size, it provided a supposed explanation for why all compasses point to this location.
Inventio Fortunata (also Inventio Fortunate, Inventio Fortunat or Inventio Fortunatae), "Fortunate, or fortune-making, discovery", is a lost book, probably dating from the 14th century, containing a description of the North Pole as a magnetic island (the Rupes Nigra) surrounded by a giant whirlpool and four continents.
According to certain authors, the Jabal Qaf of Muslim cosmology is a version of Rupes Nigra, a mountain whose ascent —such as Dante's climbing of the Mountain of Purgatory, represents the pilgrim's progress through spiritual states. [8]
Shaded and colored image from the Shuttle Radar Topography Mission—shows an elevation model of New Zealand's Alpine Fault running about 500 km (300 mi) long. The escarpment is flanked by a chain of hills squeezed between the fault and the mountains of New Zealand's Southern Alps.
While not found by numerous expeditions in 1840, 1889, 1902, 1909, and 1912, the island was not officially removed from nautical charts until 1904. Royllo: 1424: A small island to the west of the mythical Antillia (see Antillia above). Rupes Nigra: 14th century
The first group to reach the north magnetic pole was led by James Clark Ross, who found it at Cape Adelaide on the Boothia Peninsula on 1 June 1831, while serving on the second arctic expedition of his uncle, Sir John Ross. Roald Amundsen found the north magnetic pole in a slightly
Castelnuovo Nigra, a comune (municipality) in the Province of Turin in the Italian region Piedmont; Porta Nigra, a large Roman city gate in Trier, Germany; Rupes Nigra, a phantom island, was believed to be a 33-mile-wide magnetic island of black rock located at the Magnetic North Pole
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