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In February 1945,the Big Three met at Yalta to discuss
Caldera
A large crater formed by a volcanic eruption, resulting from the collapse of land following the emptying of the volcano's magma chamber.
Dissolved Limestone
The process by which limestone (calcium carbonate) is dissolved into groundwater, contributing to karst landscapes and features such as caves.
Travertine
Travertine is a form of limestone deposited by mineral springs, especially hot springs, often characterized by its terraced appearance.
Flowstone
Any deposit of calcium carbonate or other mineral formed by flowing water on the walls or floor of a cave.
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