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E-Groups are unique architectural complexes found among a number of ancient Maya settlements. They are central components to the settlement organization of Maya sites and could have served as astronomical observatories. The alignment of these structural complexes corresponds to the sun's solstices and equinoxes. ==Origin of the name== E-Groups are named after “Group E” at the Classic period site of Uaxactun, which was the first one documented by Mesoamerican archaeologists. 〔()〕 At Uaxactun, the Group E complex consists of a long terraced platform with three supra-structures arranged along a linear axis oriented north-south. The two smaller outlying structures flank the larger central temple. A stairway leads down to a plaza formed by Uaxacatun’s Pyramid E-VII. Three stele immediately front the E-Group, and a larger stele is located midway between Group E and Pyramid E-VII. Each of the four stairways incorporated into the complex (the main central one and three leading up to each supra-structure) bears two side masks (for a total of 16). From a point of observation on Pyramid E-VII, the three structures have the following orientation: *North structure (Temple E-I) – in line with the sunrise at the Summer (June) solstice *South structure (Temple E-III) – in line with the sunrise at the Winter (December) solstice *Central structure (Temple E-II) – in line with the sunrise at the equinoxes (September and March) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「egroup」の詳細全文を読む スポンサード リンク
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