"This stone object looks like a coffin," researcher Scott Waring of the UFO Sightings Daily was quoted as saying.

It looks to be about one metre across and a foot-and-a-half high.

According to Waring, the object may simply be a stone formation but wonders if NASA could turn the Curiosity rover around and take a closer look at the 'coffin'.

Speculations about life on Mars has been the hottest talking topic for many years, and UFO hunters used to find many evidences which can be used to substantiate their views.

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