It's time for our May Puzzler! What do you think the horizontal line is on the upper part of the image? The tan areas below? The blue-black blotches on the right? And what part of the world does this image show?

Please post your answers in the comments of our Earth Matters blog or in the comment thread on Google+. Read more at
http://earthobservatory.nasa.gov/blogs/earthmatters/2013/05/21/may-puzzler/?src=googleplus
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