Tikal site map. (A) Location of Tikal in the southern Maya lowland. (B) The location of the Corriental, Palace, Perdido, Temple, and Tikal reservoirs, and the Inscription sinkhole and their catchment areas. (C) A lidar-derived hillshade image of the Corriental reservoir. The lidar-derived hillshade images (B,C) were created by Francisco Estrada-Belli, a principle of the PACUNAM Lidar initiative23. Christopher Carr used ESRI ArcGIS 10.3.1 software (www.esri.com) to create a GIS layer of the catchment areas, georeferenced on the hillshades to make the base maps. Kenneth Barnett Tankersley then used Microsoft PowerPoint for Mac Version 16.41 (www.microsoft.com) to create this figure.