Blogger spots secret alien moonbase using Google Moon. Experts from Arizona State University say the anomaly may be caused by an error in digital photography software. Video below.
Waring says: "On the back side alone there is seven to eight right angles. The darkness around the edges seems to tell us that there is a large cavity underneath the structure, under the ground and also along the edges here there is a walled area which tells us there is a cavity there because the wall is to keep things from falling in."
