Batur

Mount Batur, or Gunung Batur, is an active stratovolcano on the island of Bali, Indonesia. It sits at the edge of the eastern rim of the Batur caldera and forms part of a volcanic complex that includes Lake Batur, the island’s crater lake. The peak rises about 1,700 meters above sea level, and the surrounding caldera features a rugged landscape shaped by past volcanic activity.

Geology and activity: Batur is part of the Sunda Arc and has a history of frequent eruptions in historical times. The current cone atop the caldera has grown after major caldera-forming events created the lake. Activity has included lava domes and phreatic explosions; eruptions are typically accompanied by gas emissions and ash plumes, and earthquakes are common indicators of unrest. The Indonesian Center for Volcanology monitors Batur and issues alerts when needed.

Lake Batur ecosystem and culture: The caldera contains Lake Batur, a freshwater lake used for irrigation and fisheries by nearby communities. The surrounding area is culturally significant in Balinese Hinduism, with temples such as Ulun Danu Batur near the lake; pilgrims and hikers regard the mountain as sacred.

Tourism and access: Mount Batur is a popular hiking destination, with sunrise treks to the crater rim catering to visitors of varying fitness levels. Guided ascents are common, and safety guidance is provided by local operators. Eruptions can affect access; hikers should follow official advisories and respect local guidelines.