Where Is This?

[glatt]

The bunkers arranged in circles look like the place where they store the ammo. There are two spots at the corners of the site where the guns probably sat. The shadows have the sun coming from the right. I'm going to assume the image is in its proper orientation and right is East. That's where the guns would be pointing. Who would point their guns to the East? France would. But I've been doing all sorts of image searched of the Maginot Line, and those fortifications look completely different from these.

I keep hitting dead ends.