First broadcast: on BBC One South EastLatest broadcast: on BBC Four
Historian Dan Snow, naturalist Steve Backshall and wildlife enthusiast Kate Humble set out to solve some of the mysteries of St Kilda in the Outer Hebrides. Show more
First broadcast: on BBC One Northern IrelandLatest broadcast: on BBC Four
Series exploring the remote and rocky islands of St Kilda, a UNESCO World Heritage Site. The team searches for underwater caves and discovers one of the world's natural wonders. Show more
First broadcast: on BBC One LondonLatest broadcast: on BBC Four
Series exploring the remote islands of St Kilda, a World Heritage Site. Kate Humble checks out the islands' underwater life, while Dan Snow investigates a World War II plane crash. Show more
