Photo: Comisión Mexicana de Filmaciones, Petén Campechano (Some rights reserved) Located in the state of Campeche, on the border of Quintana Roo and Guatemala, the Calakmul Biosphere Reserve is one of the largest protected areas in Mexico, covering more than 14 percent of the state. Google Calakmul is Mexico’s grand eco-archaeological experiment. The 723,185 … Continue reading Calakmul