20140218-182717 Halemaumau crater is a crater within the (inner) caldera. It contained a lake of lava between 1883 and 1924, when it exploded. The width of the crater was then...
Halemaumau crater is a crater within the (inner) caldera. It contained a lake of lava between 1883 and 1924, when it exploded. The width of the crater was…
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20140218-182435 Inner caldera floor and Halemaumau crater.
Inner caldera floor and Halemaumau crater.
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20140218-182950 Steam vents on the outer caldera. The inner caldera floor is a few dozen meters below.
Steam vents on the outer caldera. The inner caldera floor is a few dozen meters below.
20140218-182443 Inner caldera.
Inner caldera.
20140214-224221 Inner caldera.
Inner caldera.
20140218-182501 Edge of Halemaumau crater.
Edge of Halemaumau crater.
20140214-224018 Halemaumau crater.
Halemaumau crater.
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20140214-225322 Pahoehoe lava is composed chiefly of black basalt glass. Gases emitted by the flowing lava form many small bubbles, called vesicles.
Pahoehoe lava is composed chiefly of black basalt glass. Gases emitted by the flowing lava form many small bubbles, called vesicles.
20140214-225336 Aa lava forms when sticky, viscous flows break up while moving downslope. The reddish brown color is caused by oxidation as the lava cools.
Aa lava forms when sticky, viscous flows break up while moving downslope. The reddish brown color is caused by oxidation as the lava cools.
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