Genre: Documentary, History, Science
Premise: A camera crew descends hundreds of feet below the streets of major cities -- such as New York, Cairo, London and Tokyo -- to explore the layered remnants of civilizations left buried deep under modern metropolitan centers.
S02, E06 (First Aired: Mar. 10, 2008)
Explorers uncover Mayan tombs, sacrificial altars, caves and entrances to the ancient civilization's underworld in the jungle of Belize, where hundreds of ruins dot the landscape.
S03, E11 (First Aired: Jan. 26, 2009)
Host Don Wildman explores ancient structures buried beneath the desert sands of Egypt and the streets of Cairo, examines how these engineering marvels survived invasions, and discovers a tomb filled with 2,000-year-old mummies.