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Savonoski Crater: The mysterious, perfectly round hole in Alaska that scientists can't explain

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The Savonoski Crater is a round hole in southwestern Alaska that scientists have long struggled to explain due to a lack of geological evidence.

The crater measures roughly 1,600 feet ( 500 meters ) across and 360 feet ( 110 m) deep.

It is half -filled with water from rainfall and snow melt.

Geologists have yet to find proof of a space rock hitting Earth in this location.