The Bering Land Bridge Preserve in Alaska

This Envisat image features the Bering Land Bridge National Preserve located on the Seward Peninsula in Northwestern Alaska. The preserve protects the remains of a land bridge that once connected the continents of Asia and North America, which are now separated by the Bering Strait. Envisat's Advanced Synthetic Aperture Radar (ASAR) acquired this image on 9 October 2004. Because radar images measure surface texture rather than reflected light, there is no colour in a standard radar image.