Secrets in the Sand

Discover 10 perfectly preserved Byzantine-era crocodiles on the banks of the Nile. Untangle the puzzle of the Namib Desert's grass circles, locate the remnants of a lost foreign-ruled city in Egypt, and solve the riddle of Peru's Band of Holes.

Investigate an odd phenomenon that makes rocks slide across Death Valley. Learn how pieces of jade are rewriting Chinese history, examine animal bones that could show an earlier human arrival in the Americas, and visit Earth's oldest stone circle.

Connect the Great Pyramid to an archeological find near the Suez Canal, then unveil the secrets of colossal rock sculptures in Saudi Arabia. Gaze at a mystical geological formation deep in the Sahara and unmask a 37-million-year-old Egyptian enigma.

Travel to Cairo to examine a stunning find under the Pyramid of Unas' watchful eye. Search for a 16th-century Portuguese shipwreck in the Namib Desert, unearth a WW II plane that crashed in the Sahara, and study a fossilized missing link in Taiwan.

Unveil the legacy of a prehistoric Peruvian hunter and dig up what may be the ruins of a fabled Roman seaside city in Tunisia. Listen to a haunting sand-dune symphony in Mongolia, then catalogue a trove of human and animal bones in Saudi Arabia.