If you are a fan of history, this is an amazing clip – archeologists and historians have explored a massive network of underground tunnels that stretch from Scotland to Turkey, which are estimated to be some 12,000 years old. They are described as underground highways.
Robert Sepehr is an author, producer and anthropologist specialising in linguistics, archeology, and paleobiology (archeogenetics). He explains some of the mysteries and myths which surround these tunnels and how civilisations lived below ground throughout time.
