Note on activity from Bagana volcano from 1975 to 1980

The predominant activity at Bagana volcano between 1975 and 1980 was the almost continuous, but slow, extrusion of lava. Lava flow down the southern flank had continued intermittently since June 1966 until sometime between April and early June 1975 when a lava dome in the southeastern part of the summit crater was destroyed and ash-laden eruption clouds were produced. A new lava dome then began to grow in the northwestern part of the crater, and lava flow was redireted down the northwestern flank of the volcano. There has been almost continuous effusion of sluggish lava flows since June 1975 over much of the same path on the northwestern flank of the volcano. -Authors