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'''Noctis Labyrinthus''', "the labyrinth Labyrinth of the nightNight", is a region of [[Mars ]] between the Valles Marineris and the Tharsis upland. ^1pg210 The region is notable for its maze-like system of deep, steep-walled valleys. The valleys and canyons of this region formed by faulting and many show classic features of grabens, with the upland plain surface preserved on the valley floor. In some places the valley floors are rougher, disturbed by landslides, and there are places where the land appears to have sunk down into pit-like formations.^11pg210 It is thought that this faulting was triggered by volcanic activity in the Tharsis region.¹ The area is more or less empty as those adepts of the [[Adeptus Mechanicus]] who attempted to found their forges there were plagued by technical problems.²¹¹ Below this area is the chamber where the [[Dragon of Mars]] is imprisoned.³⁵⁴