Extended Data Fig. 9: Examples of (i) openings in enclosures and straight causeways and (ii) platforms at the intersections of causeways and enclosures at the Cotoca site.
From: Lidar reveals pre-Hispanic low-density urbanism in the Bolivian Amazon

a, Opening at the junction of a causeway and the polygonal enclosure. b, Platform at the junction of a causeway and the polygonal enclosure. c, Platform located at the opening of the causeway likely caused by a river. On the opposite shore, the causeway continues in a southeastern direction.