Mount Telomoyo is a stratovolcano

Stratovolcano

A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...

 in Central Java

Central Java

Central Java is a province of Indonesia. The administrative capital is Semarang. It is one of six provinces on the island of Java.This province is the province of high Human Development in Indonesia and its Points Development Index countries is equivalent to Lebanon. The province of Central Java...

, Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. The volcano was constructed over the southern flank of the eroded Pleistocene

Pleistocene

The Pleistocene is the epoch from 2,588,000 to 11,700 years BP that spans the world's recent period of repeated glaciations. The name pleistocene is derived from the Greek and ....

-age Soropati volcano, which has a height of 1300 metres (4,265.1 ft). The Soropati volcano collapsed during the Pleistocene, leaving a U-shaped depression. Mount Telomoyo grows on the southern side of the depression, reaching over 600 metres (1,968.5 ft) above the depression's rim.