English: Mount Agung continues to erupt, ejecting a volcanic plume of gas and ash over the Indonesian island of Bali. The ash is visible amidst midday clouds in this false-color image, acquired on November 29, 2017, by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. The image uses a combination of shortwave infrared light and natural color, making it easier to differentiate between ash, clouds, and forest.

The plume appears to rise from two vents in the volcano’s crater. Just as the plume’s sulfur dioxide levels can vary, so too can the amount of steam and ash. A whiter plume indicates the presence of more steam, while a darker plume indicates more ash.

Caption by Kathryn Hansen, NASA.