Documentary series exploring incredible feats of human endeavour underground, revealing what people have built, where they have built it, how and why. For UK and US television.

Narrated by Jamie Effros
Series Producer: Nicholas Head
Executive Producers: Miles Jarvis & Jaimi West
Producer: Ben Prager
Production Manager: Clare Beasley
Producer/Director: Alon Michael Hattingh
Camera Operators: Matthew Muscat Drago & Andrew Randon
Drone Ops: Warren Brimmer & Mario Demanuele