It’s probably safe to say that Google Maps is one of the greatest technological innovations of the last 10 years. With just a few clicks, you can view any place on the face of the Earth.

Well, almost any place.

There are some areas of Google Maps that, for one reason or another, are concealed or obscured in some very obvious ways. Here are the five most suspicious-looking ones…

1. Junction Ranch, CA

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Junction Ranch is in the middle of California’s Mohave Desert. There lies a mysterious airstrip…some believe it’s part of the China Lake proving grounds, which is an air force testing location for drones. While that’s suspicious in and of itself, even weirder is that only parts of the base are obscured from Google Maps. When you zoom in on the base’s location, there are parts of buildings intentionally scratched out. What’s going on down there?