> The impact structure was formed during the Paleoproterozoic Era, 2.023 billion (± 4 million) years ago. > The asteroid that hit Vredefort is estimated to hav

> The impact structure was formed during the Paleoproterozoic Era, 2.023 billion (± 4 million) years ago. > The asteroid that hit Vredefort is estimated to have been one of the largest ever to strike Earth since the Hadean Eon some four billion years ago... Let that sink in (ugh) for a while. The Vredefort impact was so long ago, it's almost completely eroded away today. And yet, when it occurred the Hadean Eon was as ancient then as the Vredefort is to us today. The mind boggles.