| 41. | The lake is located inside the summit crater of Licancabur and was discovered by climbers in 1953, when it was long.
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| 42. | It has a summit crater as well as five cinder cones on its flanks which are the source of lava flows.
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| 43. | By the fourth, fifth and sixth days the eruption was greatly diminished and only the shoulder and summit craters were erupting explosively.
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| 44. | The three eastern summit craters formed at the time when the Tumbres-Talabre flow was erupted in remains of the stage I cone.
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| 45. | It has a wide summit crater which contains a crater lake ( Lake Ipala ), whose surface lies about below the crater rim.
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| 46. | The last activity here has been dated to between 150, 000 and 200, 000 years ago and created the current Kibo summit crater.
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| 47. | Krenitsyn Peak has a summit crater 350 m wide and is the highest point of the volcano and on the entire Onekotan Island.
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| 48. | The unforested summit crater and weak fumarolic activity suggests that the most recent eruption may have been only a few hundred years ago.
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| 49. | Both the summit crater and the area below the crater on the southern flank are faintly fumarolically active, with yellow sulfur deposits observed.
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| 50. | Mount Damavand is also the tallest volcano in Asia and below its summit crater are found fumaroles and hot springs as well as glaciers.
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