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Landmark Africa wonder

Lake Retba (Lac Rose)

3000 BCE – still standing

Striking pink-coloured saltwater lake near Dakar, Senegal, coloured by Dunaliella salina algae

Elsewhere in Africa at the time

Records whose own span overlaps this one, found by the same test the canvas draws with. The bar under each card is where it sits inside this one.

See the whole view
Image credits4 pictures from Wikimedia Commons
  • Leptis Magnajoepyrek from Richmond, Va, USA · CC BY-SA 2.0
  • Flag of AlgeriaOriginal: National Liberation Front of Algeria Vector: SKopp · Public domain
  • VolubilisSubhros · CC BY-SA 3.0
  • Flag of AngolaOriginal: Henrique de Carvalho Santos Vector: SKopp · Public domain