In 2010, a previously little-known Icelandic volcano erupted twice, sending a huge plume of volcanic ash all over Europe.
The ash cloud grounded flights for days, causing disruption for millions of passengers.
Reena Stanton-Sharma talks to Icelandic geophysicist and Eyjafjallajökull-watcher, Sigrun Hreinsdottir. This programme was first broadcast in 2022.
(Photo: The awesome power of Eyjafjallajökull. Credit: Getty Images)
