Not to worry, it's most likely just a post processing artifact used by Google at the request of the US Government to hide the sensitive military installations hidden in the shadows in that part of Oregon.
How did he find that secret submarine base in the first place??
Now, there will be a international incident as the US accuses Canada of leaking secrets via Canon rumors. 
The sub is actually parked right behind OMSI and the portland opera. For reals yo.
And, oddly enough, no banding!
That one is obviously the decoy!
Oops! Now after Canadian Bacon there will be Indian Paneer
