I don't know what it is, but good news! You can probably find out. Just right click on the image and select "search google for image" from the drop down. That will usually provide at least some information about the contents of the picture. We've tried it before for my avatar, though with limited results.
Random google search, found this pic from a Boston snowstorm. It'd be nice to walk through a slushy, snowy city that's lit up for the holidays.
Here's the wave, looks like your picture. Crazy wild place, you have to enter a lottery to win a permit to hike.