Yukon Delta

Countless lakes, sloughs, and ponds are scattered throughout this scene of the Yukon Delta in southwest Alaska. One of the largest river deltas in the world, and protected as part of the Yukon Delta National Wildlife Refuge, the river's sinuous waterways seem like blood vessels branching out to enclose an organ. This image was acquired by Landsat 7 Sept. 22, 2002.
Image and caption: NASA's Goddard Space Flight Center/USGS.