As the land above the magma chamber collapses, immense gray clouds called pyroclastic flows burst out horizontally all around the caldera.
Travellers flock to the Indonesian island of Java to see the magnificent Kawah Ijen volcano - but what they don't expect to find is the stunning turquoise-hued caldera lake at the volcano's summit.
The mountain is encircled by the doughnut-shaped depression of the caldera.
Formed by the collapse of the Mount Mazama volcanoes approximately 6, 850 years ago, this caldera (crater) lake is located in Oregon.
The caldera is considered an active volcano.
At the image top, over Io's limb, a bluish plume rises about 140 kilometers above the surface of a volcanic caldera known as Pillan Patera.
Meinstein said the harbor is the caldera of a volcano.
These volcanoes are so explosive that they burst open in a single big crack, leaving behind a vast hole, the caldera.
You can tour ancient Byzantine churches and charming wineries, or go trekking along the rim of the caldera and discover its traditional villages and stunning scenery.
New satellite data indicate that this uplift and subsidence is caused by the movement of magma beneath the surface and may explain why the northern edge of the park continues to rise while the southern part of the caldera is falling.
One is a volcanic mountain, with a turquoise lake in the caldera and forests on its flanks.
Finally, it is concluded that the crater lake is a caldera.
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