Vredefort Dome, South Africa, part of a massive meteorite impact structure from 2 billion years ago.
One of a series of UNESCO World Heritage sites being documented from space by ESA astronaut Samantha Cristoforetti. View the series on Samantha's Flickr photostream
Samantha is currently living and working on the International Space Station as part of the Expedition 42 crew. Connect with Samantha on social media via samanthacristoforetti.esa.int
More about the UNESCO World Heritage sites: whc.unesco.org