Iain Stewart finds out how gung-ho geologist Edward Bailey discovered that Scotland was once home to super volcanoes. Plus the story of unsung hero Arthur Holmes. Show more
Discover 11,128,835 listings and 279,834 playable programmes from the BBC
Iain Stewart finds out how gung-ho geologist Edward Bailey discovered that Scotland was once home to super volcanoes. Plus the story of unsung hero Arthur Holmes. Show more