Indonesia's Mount Sinabung has released a large column of ash into the sky after erupting again on July 28.

The eruption unleashed a huge cloud of volcanic material that reached around 4,500 metres into the air.

Mount Sinabung releases volcanic materials during an eruption on July 28, 2021 in Karo, North Sumatra, Indonesia. The 2,600-metre (8,530-foot) volcano unleashed an avalanche of gas clouds with columns of ash reaching 4,500 meters high from the scorching summit flowing beneath its slopes during Wednesday's eruption. Sinabung is among more than 120 active volcanoes in Indonesia, which is prone to seismic upheaval due to its location on the Pacific "Ring of Fire," an arc of volcanoes and fault lines encircling the Pacific Basin.