Underground Worlds returns, once again exploring the wonders hidden in the deep, dark places beneath us. The second season of this epic series continues to reveal the hidden stories of some of the world’s most extraordinary underground structures, both natural and man-made, brought to life with spectacular visuals and expert investigation and explanation.
For thousands of years humans have explored and exploited the space beneath our feet. Now Underground Worlds takes you on a journey into the underworld to see what man and mother nature have created, out of sight, beneath the surface.
We travel the world to explore the largest and most spectacular cave networks ever discovered. We gain access to vast operational subterranean complexes, explore forgotten man-made tunnels and venture into mothballed military bunkers.
Each episode features three underground worlds and unpacks each unique story – its conception, its construction, its uses and, in many cases, its repurposing for different future uses.
