Anomaly hunters were scouring the latest NASA images from the Curiosity Rover and spotted what appears to be a doorway on the rocky hillside of the red planet.
According to reports, the oddity was photographed on Saturday, May 7, as the vehicle continued its mission on Mars.
As we look closer, the opening is carved into the landscape and leads to a hallway sporting smooth walls.
Some believe the entrance resembles the temples in ancient Egypt and think it possibly served a similar function to the Martians.
On the other hand, the skeptics argue it's simply a natural formation.
Click HERE to see the image in full and in color.