Secrets in the Sand (2023)

S1E6 The Peruvian highlands

In the highlands of Peru, ancient human remains are unearthed, shedding light on past civilizations. Meanwhile, in Tunisia, remnants of submerged Roman structures emerge from the depths. Explorers delve into the Mongolian desert to probe mysterious sounds that have puzzled locals. Additionally, a trove of animal bones is found within a cave in Saudi Arabia, prompting further examination of the region's history.