Scientists uncover hidden ancient drawings of animals in a Paleolithic cave using a technique to make them look 3D

Tech Insider
Four images of a Paleolithic cave drawing of a horse in La Pasiega Cave in Spain, including two rendered in bright colors using DStretch software
The image of a horse in the La Pasiega Cave shown without and with DStretch software processing.

Raquel Asiain/Pedro Saura

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