NASA says that this image, originally taken in 2017 by the Mars Reconnaissance Orbiter, shows several holes on the surface of the planet.

A MYSTERIOUS hole on Mars could be harbouring alien life in an extensive network of underground tunnels, according to Nasa. From orbit, scientists have captured a deep pit on the Red Planet that ...

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NASA spots a mysterious 100-meter hole on Mars that could lead to underground caves — raising hopes of hidden alien life and future exploration possibilities.

NASA’s image of a massive 100-meter Martian pit sparks speculation of subsurface caves—potential shelters for microbial life ...

Holes such as this are of particular interest because they might be portals to lower levels that extend into expansive underground caves," NASA said.

NASA has discovered a large hole on Mars, measuring 328 feet, which it speculates may serve as a "portal" to underground environments that could harbor alien life. , Technology & Science News - Times ...