3 Stunning Ancient Volcanoes on the Java Island

Gunung Api Purba Nglanggeran.
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The Tengger Caldera is said to be 9 x 10 km in size, surrounded by steep cliffs with a height of between 50 meters and 500 meters.

The mountain range within the caldera is surrounded by volcanic rocks of Mount Tengger Purba which is also known as Mount Bromo Purba.

In the Tengger Caldera, there are several volcanoes, such as Mount Bromo, Mount Widodaren, Segorowedi, and Batok.