Can you imagine living in a city of a million inhabitants in the heart of the jungle?
That was Angkor. There the Khmer civilization flourished for 600 years. The Khmer empire stretched from the 9th to the 15th century and its territory encompassed Thailand, Cambodia, Laos, Vietnam, and part of Burma and Malaysia.
Thousands of trees were cut down for its construction, breaking the monsoon rain cycle. The downpours devastated the crops and collapsed the canals.
Satellite images have revealed that Angkor, during its heyday between the 11th and 13th centuries, was the largest pre-industrial urban center in the world.
Its inhabitants fled and Angkor ended up engulfed by the dense jungle.