As early masters of astronomy, architecture, engineering, and more, the Mayans are considered the most advanced of all ancient people. But somewhere in its rich, 2,000-year history, around the late 9th century, the entire civilization disappeared. With new evidence and revolutionary theories, this captivating documentary aims to solve one of the greatest mysteries of all time and discover the real cause of the Mayan collapse. 85 min. Soundtrack: English.