What is a caldera lake?
Quick Answer
A caldera lake is a lake that fills a volcanic depression formed after a large eruption or collapse. It often occupies the collapsed summit area of a volcano.
The Full Story
When a volcano empties a shallow magma chamber during a major eruption, the ground above it may collapse and leave a broad basin called a caldera. Over time, rain and groundwater can fill that basin to create a caldera lake. Famous examples include Crater Lake in Oregon, which occupies the caldera of Mount Mazama, and Lake Toba in Indonesia, which sits in a vast volcanic depression. These lakes are reminders of explosive volcanic history and can be very deep.
Key Facts
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Suggested video title for this topic:
"The beautiful lake that sits inside an ancient explosion"
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