Deep in the Cambodian jungle lie the remains of a vast medieval city, which was hidden for centuries. New archaeological techniques are now revealing its secrets - including an elaborate network of temples and boulevards, and sophisticated engineering.
In April 1858 a young French explorer, Henri Mouhot, sailed from London to south-east Asia. For the next three years he travelled widely, discovering exotic jungle insects that still bear his name.
Today he would be all but forgotten were it not for his journal, published in 1863, two years after he died of fever in Laos, aged just 35.
Mouhot's account captured the public imagination, but not because of the beetles and spiders he found.Read the rest of this article...