Mexican archaeologists studying the ancient Mayan cities of Dzibanche, Kinichna, Tutil and Ichkabal in southern Quintana Roo have identified a network of sacbes or highways that once linked the sites. This discovery was made possible by the use of LIDAR remote sensing technology so sophisticated that it is capable of seeing what lies beneath the dense mantle of jungle vegetation.

In addition to residential areas and the palaces and temples of the ruling class, they have also identified the outlines of raised fields and cultivation terraces, irrigation canals and reservoirs, evidence of agriculture and water storage facilities to support the area population in the pre-Classic period of Mayan history.
(Source: Sipse)