Season 1

National Geographic Explorer Albert Lin is on an extraordinary mission to unlock the secrets of lost cities and the mysterious people who built them. Armed with technology to strip back the layers of time, Lin experiences personal physical and mental extremes while trekking to some of the most inaccessible and hostile environments on earth - the Mexican Jungle, the deserts of Sudan, mountains of Peru, the forgotten fortresses of Scotland and the remote cave systems of Oman. Whether it’s the iconic civilization of the ancient Mayans, the Canaanites, or the Lords of Magan, each site in this six-part series is uncovered using the latest drone-scanning and ground-penetrating technology to bring these cities back to life in real-time 3D to reveal their untold stories.