Doorway to underground base on Mars
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The image of Wrinkle ridge in Elysium Planitia on Mars was taken by the HiRISE camera on board NASA’s Mars Reconnaissance Orbiter (MRO) spacecraft on April 2, 2008.
The image shows what looks like two hatches fixed to the surface of Mars.
The sun reflects off the first rectangular hatch, which may be metallic, while the opposite side shows a dark rectangular shadow where the sun’s light is blocked by the second hatch.
The hatches of about 7 x 12 meters are slightly open. This is a doorway that gives access to an underground basement?
Suppose it’s not about something natural but artificially, we may wonder, other than who built it, what was it used for?
Google Mars coordinates: 8°50’17.09″N 150°36’32.13″E
Source: UFO Sightings Hotspot