WATCH | Volcanic eruptions: What are the risks to aircraft?

A volcanologist explains why it is dangerous for airplanes to fly in or near volcanic ash clouds. In April 2023, the volcano Shiveluch, on the Russian peninsula of Kamchatka, caused the largest ashfall in 60 years. The village of Klyuchi, located only 47 kilometres from the volcano, was covered by a 4.5-centimetre-high layer of ash within a few hours while the ash cloud reached a height of up to 20 kilometres.