A place of superlatives, as South Africa’s Vredefort Dome, 120km southwest of Johannesburg, is not only the oldest astrobleme (literally “star wound”) but the largest as well. Over 2000 million years ago, an enormous meteorite thumped into the Earth’s crust, creating a gigantic hole measuring 190km across. The effects must have been devastating. Today, visitors come to gawp at the depth and size of the crater, an impressive reminder of quite how old our planet is.
Gebel Barkal and the Sites of Napatan, Sudan
Together with the small mountain dubbed the Gebel (or Jebel) Barkal, the five Sites of the Napatan straddle the River Nile and spread over 60km. These sites are seriously, seriously old, representing both the Napatan (900 to 270 BC) and Meroitic (270 to 350 AD) dynasties. You’ll find ancient pyramids, tombs, temples and palaces here – some still worshipped by the locals today.