Persistent lava lakes can stay molten for years as open magma windows
A few volcanoes host persistent lava lakes — glowing pools that remain molten for years or decades as fresh magma and heat keep the surface from fully crusting over.
Overturning crust plates and gas bursts make the lakes seethe, while scientists measure temperature and gas to gauge the plumbing below. Famous examples have lit craters in Africa, Antarctica, and the Pacific.
A volcano can keep a furnace open to the sky. Lava lakes are rare windows where Earth’s interior stays visible without a full eruption.
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