Global Volcanism Program | Image GVP-01264
The twin volcanoes Lokon (on the left) and Empung (on the right) rise above Tondano Plain. Steam rises from Tompaluan, a double crater between the two peaks. The higher peak, 1580-m-high Lokon, has a flat, craterless summit, whereas Empung, which was active prior to 1800, has a 400-m-wide summit crater. All eruptions of Lokon-Empung since 1826 have originated from Tompaluan crater between the two peaks.
Photo by Ruska Hadian, 1986 (Volcanological Survey of Indonesia).