Last updated on April 18, 2014 at 15:05 EDT
 Betsiboka Estuary
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Betsiboka Estuary

November 26, 2007
This MODIS image shows the Betsiboka Estuary, located on the northwest coast of Madagascar. Over the last century, a great deal of Madagascar's rainforests and coastal mangroves have been cleared, resulting in increased erosion of the land. After heavy rains, the bright red soil is washed from the hillsides into the streams and rivers. As a result, this estuary, which is the mouth of Madagascar's largest river, appears bright red.