The ancient myths and mysteries of the world's greatest stone circle, Stonehenge - from Merlin and sun worship, to the Battle of the Beanfield and the astonishing Orkney revelation.

A warm-hearted, quirky look into the enduring legend of the Loch Ness monster, exploring the folklore, the science and the unwavering human fascination with the world's most famous monster.

From the mountains to the oceans, a deep plunge into sinkholes - one of the world's most terrifying phenomena, but also a window into many unsolved archaeological mysteries.