Dec 29, 2021
In Underworld: Great Britain the team examines the deepest shaft discovered in the UK – Titan. They hope a 3D scan can reveal its true size and secrets about its formation.
Underworld
Embark on a journey deep into the unknown 95% of our planet revealing extraordinary caves with 3D laser-scanning technology.
Season 1 Episodes
Browse every episode and jump into details.
Dec 29, 2021
In Underworld: Gibraltar the team learns more about the Rock’s caves and tunnels. At Gorham’s Cave secrets are revealed about our Neanderthal cousins and their importance to the Ancient Greeks.
Dec 29, 2021
Underworld: Slovenia is an adventure into Slovenia’s largest ice cave. The team scans the volume of ice providing data for scientists to assess climate change.
Dec 29, 2021
In Underworld: Belize the team discovers why the Maya Civilization vanished. In the cave of Actun Tunichil Muknal they uncover the remains of human sacrifices. Professor Holley Moyes reveals how a drought caused the Maya to venture underground to make human sacrifices as they prayed for rains.
Dec 29, 2021
Underworld: China uncovers the secrets of China’s giant caves. A team maps Cloud Ladder Hall showing how its size creates an underground weather system.
Season 1 FAQ
Quick answers about this season's release timeline and episode lineup.
When did Underworld Season 1 premiere?
Underworld Season 1 premiered on December 29, 2021.
How many episodes are in Underworld Season 1?
Underworld Season 1 has 5 episodes.
What is the first episode of Underworld Season 1?
The season opens with Season 1 Episode 1, "Great Britain". It aired on December 29, 2021.
Go to Season 1 Episode 1