The Vredefort crater in South Africa, formed by an asteroid impact roughly 2.02 billion years ago, has an estimated original diameter of about 300 km — the largest confirmed impact structure on Earth, though heavy erosion over two billion years means only its heavily weathered central dome is visible today.
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The Vredefort crater in South Africa, formed by an asteroid impact roughly 2.02 billion years ago, has an estimated original diameter of about 300 km — the largest confirmed impact structure on Earth, though heavy erosion over two billion years means only its heavily weathered central dome is visible today.
The greatest diameter of any confirmed asteroid or comet impact structure on Earth's surface.
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Limits Registry. LR-LARGEST-IMPACT-CRATER. Largest confirmed impact crater on Earth. 2026.