Kalambo falls, Zambia. The beautiful spectacle forms as the Kalambo River takes a 235m plunge downstream. It's a single drop fall - the second highest falls in Africa and 12th highest in the world. Something else is special about Kalambo...the stone tools and wooden structures excavated at the falls represent one of the longest examples of human occupation in sub-Saharan Africa. _This photo was graciously shared by Christine Mfula_