Carbon dating tests and excavation of a colorful pre-Incan temple indicate that it was built thousands of years ago by an advanced civilization, a prominent archaeologist said in comments published Sunday by a Peruvian newspaper.

Unearthed in Peru’s archeologically rich northern coastal desert, the temple has a staircase leading to an altar that was used for worshipping fire and making offerings to deities, Walter Alva, who headed the three-month excavation, told El Comercio.

Some of the walls of the 27,000’square-foot site almost half the size of a football field were painted, and a white and red mural depicts a deer being hunted with a net.

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