What Is This In Bavaria/Germany? Where Is The Source?

http://www.wetteronline.de/rad……ldbayf.htm

Just have a look. That’s no loop, b’cause this would vanish after a while. It’s just a one-moment downpour radar.
I saw this many times at exactly this place. Seems like they want to block fronts there.

And… Don’t tell me that the mountains are causing this, it’s clearly artificial.

I do suspect the source, but I might be wrong, so I want to bring it here first. Anyway it will be busted as soon as possible.

Habibi