Our free image this week is a gorgeous grey sky with little blue patches peeping through. And, if every cloud has a silver lining, the big one here is that this photo is free. And it will remain available for free downloading until 11:59pm EST, Sunday, April 12, 2015.

The image comes to us from Bigstock contributor Sergey Pankin, from a collection that also includes royalty-free photos of sunflowers, snow crystals, and the city of Moscow. Happy downloading. 

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