The Best Hidden Underground Secrets In The World | Underground Britain | Spark

Follow Rob Bell as he ventures into the hidden underground secrets of Britain, including an underground fuel tank that was crucial during WWII, and a rumored secret base for the Hell Fire Club from the 18th Century. --- This series follows Rob Bell as he travels across Britain to discover the most fascinating secrets that are hidden beneath the surface. -- Subscribe to Spark for more amazing science, tech & engineering videos: 🚀 Join the Spark Channel Membership to get access to perks: Find us on: Facebook: Instagram: Any queries, please contact us at: owned-enquiries@ #Spark #WWII #Navy