The volcano Etna, on the Italian island Sicily, erupted on Tuesday, ending a lull that had lasted about three weeks.
Early on Tuesday, the National Institute of Geophysics and Volcanology (INGV) registered increasing activity inside the mountain, as an ash cloud rose about 9,000 metres into the air.
Some lava flowed from the crater on the south-eastern side.
The 3,357-metre-high volcano has been spewing lava and ash repeatedly since mid-February. Around 50 eruptions have been recorded.
These are often spectacular to watch, but mostly harmless for the surrounding villages and the city of Catania in the south. The airport there could still be approached on Tuesday.