Dhul-Qarnayn and Gog, Magog, (Sura 18:83–98): Dhul-Qarnayn's three journeys [18:83–98] map, verse by verse, onto a single continental geography: the Pacific coast, the Great Plains, and the Grand Canyon — where meteoric iron from the Barringer Crater fits the barrier's "cannot be climbed, cannot be bored" description with a precision no traditional site matches. A 10th-century Islamic world map places Gog and Magog on a landmass across the Pacific from China, five centuries before Europe knew the Americas existed. A mathematical signs catalog ties the canyon, the crater, the map's 977 AD date, and the year of collapse — 1700 AH / 2271 AD — into a single interlocking structure.