South Africa archaeologists have rediscovered an ancient lost city from around 1800 AD known as Kweneng using laser technology. Tomorrow Th. 30 Jan. seminar @ASCLeiden: Before Johannesburg; a newly discovered Tswana city from around AD 1800 (#Kweneng). Speaker Prof Karim Sadr @WitsUniversity https://t.co/8HeTdqUEJF — Jos Damen (@ASCLibrary) January 30, 2019 The researchers – who are with…