Indonesia’s Mount Semeru erupted on December 4 spewing hot ash clouds a mile into the sky.
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The Semeru is an active strato-volcano located in East Java, Indonesia.
It is located in a subduction zone, where the Indo-Australian plate subducts under the Eurasia plate. It is the highest mountain on the island of Java.
Semeru - the tallest mountain on the island of Java contains the active Jonggring-Seloko vent at the Mahameru summit.
Semeru, also known as Mahameru, has erupted numerous times in the past 200 years.