| 31. | Irruputuncu displays vigorous fumarolic activity that occupies about half the summit crater and is visible within several.
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| 32. | This edifice is the currently active one, with the deepest of its three summit craters being active.
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| 33. | These all have summit craters and provided lava flows for the plains south of the You Yangs.
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| 34. | It has a main summit crater about in diameter which sometimes contains crater lakes, and a secondary crater.
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| 35. | Melting snow and ice, intense rainfall or the breakout of a summit crater lake can all generate lahars.
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| 36. | A wide and deep acidified summit crater lake at Chiginagak formed after November 2004 and before May 2005.
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| 37. | By 2008, the summit crater had cooled enough to have begun to have accumulated significant amounts of snow again.
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| 38. | They extend from the summit craters, although none of them appears to be associated with the currently active crater.
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| 39. | Its summit crater is thought to possibly contain an active lava lake, one of only a handful in the world.
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| 40. | It caused noticeable changes in the morphology of the volcano, including the formation of a new fracture along the summit craters.
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