Fountain activity from the western vent is visible within the Halemaumau Crater. This picture was taken Oct. 6.
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COURTESY USGS
Lava fountains from the western vent within the Halemaumau Crater at the summit of Kilauea. This photo was taken Oct. 5.
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COURTESY USGS
A view of the growing lava lake within the Halemaumau Crater. The western vent, pictured lower right, remains the dominant source of fountaining. This picture was taken Oct. 5.
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COURTESY USGS
A Hawaiian Volcano Observatory geologist jots down notes while observing the active lava lake within the Halemaumau Crater. This photo was taken Oct. 5.
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COURTESY USGS
A large lava crust forms within the Halemaumau Crater. This photo was taken Oct. 6.