Eruption history
VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.
| Start | End | VEI | Vent and dating |
|---|---|---|---|
| 21 February 1870 | 2 July 1875 | 3 | Upper west flank · Observations: Reported |
| 1567 | — | ? | Observations: Reported |
| 1542 | — | ? | Observations: Reported |
| 930 ± 200 years | — | 6 | Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#341030)