Tony Robinson tells the epic story of how Britain was formed, and how the earth beneath our feet has shaped the country we live in today. This is a new series, on Channel 4 at 8pm on Monday evenings.
In this first episode, Tony Robinson unearths these volcanic treasures, which lie hidden in the landscape and beneath some of our most iconic landmarks.
Tony travels the country, meeting the experts who reveal the impact of volcanoes on Britain's development. From a volcano blasting in the heart of Edinburgh to mega-volcanoes unleashing Armageddon in Snowdonia; from unstoppable lava floods in Skye to a gigantic slab of magma beneath Northumberland giving a helping hand to the Romans.
You can watch it on 4OD by clicking here - hurry though, you have 29 days left to watch it!