#00499 / Nature
Largest Confirmed Terrestrial Impact Structure
Evidence-backedabout250–300 (reconstructed range)
Vredefort Dome
South Africa's Vredefort impact structure formed about 2.023 billion years ago and is widely regarded as the largest confirmed terrestrial impact remnant. Geological reconstructions commonly estimate the original crater at roughly 250–300 km across, while UNESCO describes a broader structure with a radius of 190 km.
