Incredible video brings long-lost medieval city in South African back to life

A lost city dating back to the 1400s hidden underneath the South African landscape has been brought back to life by experts. Researchers found ruins of the settlement known as Kweneng just south of Johannesburg using Lidar, a combination of'light' and'radar' technology. The Kweneng ruins are one of several large settlements occupied by Tswana-speakers that dotted the northern parts of South Africa for generations. In the 1820s all these Tswana city states collapsed in what became known as the Difaqane civil wars. After this time, the ruins were overgrown with vegetation until, in 2018, experts used laser technology to rediscover the lost Kweneng settlement.