© Rudi van den Heever - LinRu Photography
Tswaing is an impact crater in South Africa. This astrobleme is 1.13 km in diameter and 100 m deep and the age is estimated to be 52,000 years (Pleistocene). The impactor is believed to have been a chondrite or stony meteorite some 30 to 50 m in diameter that was vaporized during the impact event. The name Tswaing means Place of Salt in Tswana. Stone tools from the Middle Stone Age show that the crater was regularly visited by people from as far back as 100,000 years ago in order to hunt and collect salt. Water in the crater comes from surface springs, ground water and rain water and is rich in dissolved carbonates and sodium chlorides. Tswana and Sotho people harvested the salt by filtering and decoction between 1200 and 1800.
This image is a single exposure taken at about midday (11H00) with a circular polarizer filter... the clouds made for interesting shadows on the crater... For those that are interested - minimal adjustments in LR4 and no work in CS6 except resize and sharpen for web!
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