1 online resource (streaming video file) (86 min.)
Series
World history in video
Summary
One of the greatest empires that history has ever known is on the verge of collapse, in desperation its leaders look to the heavens for answers. Why a 2000 year-old civilization disappeared so suddenly has been one of the world's greatest enigmas, until now
Notes
Title from resource description page (viewed May 27, 2015)