Witness

In 1995, a cathedral was built 180m underground in the Zipaquirá Salt Mine in Colombia. The idea came from the miners building makeshift altars in the mine in the 1930s, to pray for their safety before starting their shifts. It’s now a major tourist attraction, attracting more than 600,000 visitors a year. Rachel Naylor speaks to the engineer behind it, Jorge Enrique Castelblanco.Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artist