Since then, entrance into the cave has been limited.
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For this reason the caves were closed to the public in 1963.
Bacteria, algae, and fungi began to jeopardize the integrity of the cave’s masterpieces.
A green fungus appeared on the cave walls, followed by a white one, and black stains.
In 1950, the first of many crises hit.
The excess production of carbon dioxide, water, and heat began to disturb the cave’s environment.
More than one million people visited the people between 1948 and 1963.
Nearly 2,000 painted and engraved figures—as well as hundreds of Paleolithic objects—were catalogued throughout the complex cave system.
Historians, filmakers, and photographers all wanted to document the caves.
News of the discovery spread quickly.