🇲🇽 Mexico · Pyramid
Tenayuca Double-Stair Pyramid (El Cerrito)
Late Postclassic Aztec (Chichimec-Mexica) · Chichimec / Aztec (Tenayuca-Culhua-Mexica)
Aztec double-stair serpent pyramid Tenayuca (1224–1500 CE): 21 m six-stage twin-shrine pyramid encircled by 138 coiled serpent heads wall, INAH sequential casing showcase.