Caldera
The lake in the Toba supervolcano caldera, with Samosir island rising in its middle.
Lake Toba
The lake in the Toba supervolcano caldera, with Samosir island rising in its middle.
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The lake in the Toba supervolcano caldera, with Samosir island rising in its middle.
The lake in the Toba supervolcano caldera, with Samosir island rising in its middle.