Maya civilization
Triadic pyramids

Triadic pyramids first appeared in the Preclassic. They consisted of a dominant structure flanked by two smaller inward-facing buildings, all mounted upon a single basal platform. The largest known triadic pyramid was built at El Mirador in the Petén Basin; it covers an area six times as large as that covered by Temple IV, the largest pyramid at Tikal. The three superstructures all have stairways leading up from the central plaza on top of the basal platform. No securely established forerunners of Triadic Groups are known, but they may have developed from the eastern range building of E-Group complexes. The triadic form was the predominant architectural form in the Petén region during the Late Preclassic. Examples of triadic pyramids are known from as many as 88 archaeological sites. At Nakbe, there are at least a dozen examples of triadic complexes and the four largest structures in the city are triadic in nature. At El Mirador there are probably as many as 36 triadic structures. Examples of the triadic form are even known from Dzibilchaltun in the far north of the Yucatán Peninsula, and Qʼumarkaj in the Highlands of Guatemala. The triadic pyramid remained a popular architectural form for centuries after the first examples were built; it continued in use into the Classic Period, with later examples being found at Uaxactun, Caracol, Seibal, Nakum, Tikal and Palenque. The Qʼumarkaj example is the only one that has been dated to the Postclassic Period. The triple-temple form of the triadic pyramid appears to be related to Maya mythology.
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