S1 E1: Great Britain
The team heads inside the deepest shaft ever discovered in Great Britain: Titan. Will a 3D scan reveal the shaft's true size and secrets about its formation?
44 minutes
Underworld
This series reveals how scientists are able to use 3D laser-scanning technology to explore more of the unknown that lies below the Earth’s surface.
S1 E2: Gibraltar
The team heads to a legendary rock on the edge of the Mediterranean: Gorham's Cave. What secrets will this remarkable underground labyrinth of caves and tunnels reveal?
44 minutes
S1 E3: Slovenia
An adventure into the remarkable underworld of Paradana, Slovenia's largest ice cave. The team scans the volume of ice, providing data for scientists to measure the effects of climate change.
44 minutes
S1 E4: Belize
In Belize, the team investigate why the Maya Civilization vanished. What dark secrets about lost civilizations do these remarkable underworlds hold?
44 minutes
S1 E5: China
The team is in China to uncover the secrets of the epic Cloud Ladder Hall, home to cave-dwelling monkeys, the deepest and most dramatic sinkholes on Earth, and the largest cavern on the planet.
44 minutes