Dazzling Photographs of Earth From Above
Satellite images of mountains, glaciers, deserts and other landscapes become incredible works of art
- By Erin Wayman
- Smithsonian.com, June 09, 2011
(USGS / NASA)
The Okavango Delta looks like a giant green inkblot in the middle of northern Botswana’s Kalahari Desert. Unlike many deltas that form where a river empties into an ocean or lake, the Okavango Delta branches out across dry land. The largest freshwater swamp in the Southern Hemisphere, the delta acts as an oasis for the region’s wildlife and is one of the most pristine freshwater ecosystems in Africa.