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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.
Mercator's map from 1595 showing the mythical Arctic continent, with the "Rupes nigra et altissima" ('black and highest rock') at its centre. The Rock is the site of the North Pole, captioned as the POLVS ARCTICVS. Gerardus Mercator's world map of 1569 reflects his reading of Cnoyen's Itinerarium.
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Dermatosis papulosa nigra, a condition of many small, benign skin lesions on that face that closely simulate seborrheic keratoses, a condition generally presenting on dark-skinned individuals; Linea nigra, a dark vertical line that appears on the abdomen during pregnancy; Substantia nigra, a portion of the brain associated with dopamine production
Mount Qaf in Arabic tradition is a mysterious mountain renowned as the furthest point of the earth owing to its location at the far side of the ocean encircling the earth. Because of its remoteness, the North Pole is sometimes identified with this mountain.
Rupes / ˈ r uː p ɪ s / (plural / ˈ r uː p iː z /) [1] is the Latin word for 'cliff'. It is used in planetary geology to refer to escarpments on other worlds. As of January 2013, the IAU has named 62 such features in the Solar System, on Mercury (17), Venus (7), the Moon (8), Mars (23), the asteroids Vesta (2) and Lutetia (2), and Uranus's satellites Miranda (2) and Titania (1).
Two named craters are located in the immediate area of Rupes Tenuis; Crotone, located at 82.2ºN, 290.0ºE with a 6.4 km diameter, is situated at the channel separating the scarp from Abalos Mensa, and Boola, located at 81.1ºN, 254.2ºE, with a 17 km diameter, is found close to the western boundary of the Rupes Tenuis scarp. [3]
Vallis or valles / ˈ v æ l ɪ s / (plural valles / ˈ v æ l iː z /) [1] is the Latin word for valley.It is used in planetary geology to name landform features on other planets.. Scientists used vallis for old river valleys they discovered when they sent the first probes to Mars.