Witness

In the 1970s and 1980s, scientists in Russia managed to dig a hole more than 12,000 metres deep.It was called the Kola Superdeep Borehole.They wanted to achieve a world record and learn more about the Earth's crust.Rachel Naylor speaks to Prof David Smythe, a geophysicist who worked there for four months.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 football in Brazil, the history of the ‘Indian Titanic’ and the invention of air fryers, to Public Enemy’s Fight The Power, subway art and the political crisis in Georgia. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: visionary architect Antoni Ga