Mount Sindoro, Stratovolcano in Central Java, Indonesia

Mount Sindoro is a stratovolcano approximately 3,150 meters tall standing in Central Java next to Mount Sumbing, and together they form a pair of symmetrical volcanic peaks. The mountain features steep, partially forested slopes with multiple craters that record different phases of volcanic activity.

Recorded eruptions began in the 19th century. In 1818 ash fell as far as the Pekalongan coast, and in 1882 ash from Gunung Kembang reached Kebumen. Sultan Hamengkubuwana II of Yogyakarta was born on the mountain's slope on 7 March 1750. PVMBG raised the alert level to Waspada on 5 December 2011 and lowered it on 30 March 2012.

The name Sindoro comes from the Sanskrit word Sundara, meaning beautiful, a link supported by the Bujangga Manik manuscript written as he crossed the Dieng plateau. The mountain also gave its name to the Argo Sindoro executive train between Semarang Tawang and Gambir.

The mountain can be accessed through four different climbing routes, with the Kledung Trail being the main path featuring directional signs and a base camp. Visitors should prepare for extended hiking times and are better equipped with sturdy footwear and plenty of water.

The name Sindoro comes from the Sanskrit word Sundara, meaning beautiful, a link supported by the Bujangga Manik manuscript describing a crossing of the Dieng plateau. The mountain also gave its name to Argo Sindoro, the executive train running between Semarang Tawang and Gambir.