This photo appeared today on a.net by photographer Bianca Renz, who snapped it on a Condor flight over the Alps. Just to the right of the wing is a mountain lake, and if you enlarge the photo you'll see what appears to be a very high altitude dam. Not being familiar with runoff management procedures in the Alps, I'm just wondering if anyone knows where this dam is located, if it's a common occurrence to find these structures, or if this is a rarity. I'm not sure the photographer even noticed it in the photo.
Link to the photo:
Even if no one can identify this location, it's an interesting photo.