Vredefort impact structure

Largest verified impact structure on Earth

The Vredefort impact structure is one of the largest impact structures on Earth. The crater, which has since been worn away, has been estimated at 170–300 kilometres (110–190 mi) across when it was formed, the latter estimate suggesting the initial crater was larger than Chicxulub crater, the largest mostly intact impact crater on Earth. The remaining structure, comprising the deformed underlying bedrock, is located in present-day Free State province of South Africa.

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