These eruptions were accompanied by earthquake activity. During the eruption of 1902, heavy smoke and a night time glow on the volcano were observed. The eruption in 1993 involved a   long lava flow, but it may have been a flow of molten sulfur.
Eruptions were accompanied by earthquakes. In 1902, heavy smoke and a glowing appearance at night were seen during the eruption. The 1993 eruption featured a lengthy lava flow, potentially composed of molten sulfur.