The Mayans were one of greatest civilisations of Central America, which lasted 1,500 years, until the Spanish Conquistadors arrived.
Since then, the ruins of the civilisation have been covered up by the growing jungle. However, archaeologists have been using new technology to find the remains. This new research uncovers how the Mayans lived.
Lost Cities of the Maya: Revealed is on Channel 4 at 20.00.