Mount Agung in Bali has gushed a 2,500-metre (8,200ft) column of ash and smoke for a second day.
The eruption has disrupted hundreds of flights across the Indonesian island, which is a popular tourist destination.
People have been capturing the volcano’s incredible power on camera.
Michael A Blum was on the plane from Lombok when he caught a glimpse of the eruption through the window.
He said: “Very shortly after takeoff from Lombok, the volcano came into view.
“We were climbing through about 6,000 feet when I first saw the plume of the eruption from the eastern coast of Bali.
“As we looped around the north, we were above 12,000 feet and could see the dispersal of the cloud across the entire western part of the island.”
Describing the view as “spectacular”, he added: “It was eerie to watch the eruption from the sky.
“It appeared almost calm and charming. And yet I knew how violent its effects were.”
From the ground, many took pictures from their tourism resorts and hotels.
Godmorgen fra Bali. #Agung er stadig igang. Kommer vi mon hjem i dag? #bali #tv2vejret pic.twitter.com/gbxT5bMHJP
— Malene C. Nielsen (@MaleneCNielsen2) June 29, 2018
As the sun went down, Roxanne Taylor captured a video of the volcano in the changing light.
Mount Agung has awoken! pic.twitter.com/vGkx0V2c8r
— RoxanneTaylor (@Roxanne_Taylor) June 28, 2018
And as night fell, some managed to capture the heat of Mount Agung through long exposure shots.
Indonesia is an archipelago of more than 250 million people that sits on the Pacific Ring of Fire, an area prone to earthquakes and volcanic activity.
More than 120 active volcanoes are monitored by government seismologists in the area.
