Alexander Novgorodov was browsing some NASA photographs of Mars, taken by the Mars Reconnaissance Orbiter spacecraft, when he ran across something peculiar:
There is a strange door-like structure at the base of the mountain formation from a NASA image of Mars that is causing a stir. The first person to notice it wasn’t a NASA scientist, however, but rather a Russian reader of the portal R&D.Cnews, Alexander Novgorodov. Taking a closer look at an image taken by the spacecraft Mars Reconnaissance Orbiter, he noticed an unusual morphology, which looks strikingly like a manmade doorway.
Of course, NASA scientists quickly covered it up, saying that the doorway is simply a boring old weather erosion.Martian Cave