Mount Sinabung volcano spews lava and ash during an eruption seen from Tiga Pancur village in Karo.
Photograph: Antara Foto/Reuters
Mount Sinabung is a Pleistocene-to-Holocene stratovolcano of andesite and dacite in the Karo plateau of Karo Regency, North Sumatra, Indonesia, 25 miles from the Lake Toba supervolcano.
Many old lava flows are on its flanks and the last known eruption, before recent times, occurred in the year 1600.
Solfataric activities were last observed at the summit in 1912; recent documented events include an eruption in the early hours of 29 August 2010 and eruptions in September and November 2013, January, February and October 2014.
Between 2013 and 2014 the alert for a major event was increased with no significant activity.
On 2 June 2015 the alert was again increased, and as of 26 June 2015 at least 10,000 people have been evacuated, fearing a major eruption.
The long eruption of Mount Sinabung is similar to Mount Unzen in Japan, which erupted for 5 years after lying dormant for 200 years.
Volcanic material flows from Mount Sinabung, as seen from the village of Jeraya, North Sumatra, Indonesia on June 26, 2015.
Mount Sinabung intermittently spewed burning ash and gas a week after authorities told residents to evacuate the danger zone that lay with within a radius of seven kilometers (4.4 miles) from the crater.
I caught a wave to my head, and then another one right after that,” says photographer Fred Pompermayer of this shot he took of surfer Adriano De Souza riding a wave in the early morning darkness in Mentawai, Sumatra.
“It took all of my energy just to get back to the boat after that.
”Pompermayer and De Souza were part of a team that had spent time surfing during the day and traveling at night by boat from island to island.
On the day this photo was taken, the team arrived at the location around 4 a.m. and jumped in.
We began the year with a spacewalk, and end with the stars – as shown in this time-lapse photo taken in Indonesia.
Kelly Grovier describes the image as “an arresting distortion of what the eye actually observes in the universe around it”, comparing it with Vincent van Gogh’s The Starry Night.
Now one of the world’s most famous paintings, it was dismissed by the artist months after it was painted for being too abstract. “I allowed myself to be led astray”, the Dutch post-Impressionist wrote in a letter in November 1889, “into reaching for stars that are too big”.
Many would disagree with his verdict; Grovier concludes with a quote from Calvin and Hobbes: “If people sat outside and looked at the stars each night, I’ll bet they’d live a lot differently”.