Vredefort Dome, approximately 120 km south-west of Johannesburg, is a representative part of a larger meteorite impact structure, or astrobleme. Dating back 2,023 million years, it is the oldest astrobleme yet found on Earth. With a radius of 190 km, it is also the largest and the most deeply eroded. Vredefort Dome bears witness to the world’s greatest known single energy release event, which had devastating global effects including, according to some scientists, major evolutionary changes. It provides critical evidence of the Earth’s geological history and is crucial to understanding of the evolution of the planet. Despite the importance of impact sites to the planet’s history, geological activity on the Earth’s surface has led to the disappearance of evidence from most of them, and Vredefort is the only example to provide a full geological profile of an astrobleme below the crater floor.
Criteria for inclusion as a World Heritage Site
|viii||To be outstanding examples representing major stages of earth's history, including the record of life, significant on-going geological processes in the development of landforms, or significant geomorphic or physiographic features.||All|
|Ditsong – Museums of South Africa en||2016||154km||site_izi|
|Liliesleaf Farm Museum||2019||120.4km||site_ao|
|Montecasino Bird Gardens||2018||119.2km||site_ao|
|‘The Shadow Boxer’ at Chancellor House||2018||107.4km||site_ao|
|Johannesburg’s Brutalist Water Tower||2017||130.1km||site_ao|
|Africa’s Largest Shop of Used and Rare Bookstore||2017||107.6km||site_ao|
|The World’s Richest Deposit of Gold||2017||133.1km||site_ao|
|Rand Afrikaans University (today: University of Johannesburg, Kingsway Campus, Auckland Park)||105.1km||site_brutalism|
|Johannesburgh Civic Centre||1963||107.5km||site_brutalism|
About the source: UNESCO
Within UNESCO's broad remit, this specialised agency of the UN works towards international cooperation agreements to secure the world's cultural and natural heritage, designating venues of exceptional value as World Heritage Sites.