I propose a “Milky Way / creation hypothesis” for the elongated eastern structures in early Maya E Groups: they were modeled on the Milky Way galaxy. These architectural arrangements, beginning in the Preclassic period (c. 900 B.C.–A.D. 200) in the southern Maya Lowlands, were adopted from predecessors in the Early Preclassic neighboring Gulf Coast region. The widespread overall similarity of E Groups suggests a shared belief system centered on myths about creation, and many of the characters (e.g., Maize God) and events of creation in Maya myths are set in the Milky Way. The general north–south axial orientation of the eastern platform, frequently pivoted northeast–southwest, is proposed to be related to the rainy season position of the Milky Way overhead. E Groups were probably multifunctional ritual theaters, the eastern platforms serving as stages for nighttime performances of creation stories. Late modifications into a tripart edifice, with structures or superstructures in the center and at both ends, replicated the major asterisms of the visible galaxy and/or the creator gods.

I thank my colleagues for their comments, but I disagree with their assessment.

Travellers naturally prefer to use the most passable routes and establish staging points on the way. Cost surface analysis predicts the easiest routes and viewshed analysis the territory visible from a staging point or destination. Applying these GIS techniques to the Buenavista Valley Corridor, our authors write a history of travel and exchange that vividly reflects the rivalry of two polities and the rise and fall of their nodal settlements.