
Calakmul Biosphere Reserve
More than 720,000 hectares are protected here. A single road runs from the main entrance to the ruins, about 60 kilometres through undeveloped forest, so allow plenty of time for the drive.
The Calakmul Biosphere Reserve protects the largest intact tropical forest in Mexico. Photo: Norberto_Fotografía_Negrete, Wikimedia Commons, CC BY-SA 3.0
















