Lokon-Empung

It consists of two volcanic cones, the older Lokon and the younger Empung.

The active crater of Tompaluan is situated in the saddle between the two cones.

Lokon formed during a period of andesitic volcanism on ring fractures resulting from the Tondano caldera's Late Miocene or Early Pliocene collapse.

[1] Tompaluan is a 150 x 250 m wide double crater situated in the saddle between the two peaks, historical eruptions have been reported from the crater since the mid-19th century.

[1] Historical eruptions have been reported since 1375 (give or take 25 years).