Astronomical aspects of Group E-type complexes and implications for understanding ancient Maya architecture and urban planning

{'id': 'sprajc2021', 'abstract': 'In the 1920s, during the first archaeological excavations at Uaxactún, Petén, Guatemala, an architectural complex named Group E was interpreted as an ancient Maya astronomical observatory, intended specifically for sighting the equinoctial and solstitial sunrises. In the following decades, a large number of architectural compounds with the same configuration have…