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Salazar Slytherin secretly built the Chamber of Secrets and hid a Basilisk inside after the other founders refused to only accept students Slytherin seemed worthy. The chamber was sealed and could only be opened by a Parselmouth. When that student came along he would be able to release the snake and purge the school of muggle-born students.

Lord Voldemort was the only person to ever open the chamber, once in 1952 and again in 1992. The second time he was possessing and acting through Ginny Weasley.

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9y ago

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