The images of hands are negative painted. Most of the hands are left hands, which suggests that painters held the spray pipe with their right hand or they put the back of their right hand to the wall and held the spray pipe with their left hand.
Besides these there are also depictions of human beings, felines and other animals, as well as geometric shapes, zigzag patterns, representations of the sun, and hunting scenes. The mineral pigments include iron oxides, producing reds and purples, kaolin, producing white, natrojarosite, producing yellow; and manganese oxide, which makes black.
The art in the cave dates from 13,000 to 9,000 years ago. The age of the paintings was calculated from the remains of bone-made pipes used for spraying the paint on the wall of the cave to create silhouettes of hands. The site was last inhabited around 700 AD, possibly by ancestors of the Tehuelche people.
Featured Image: Cueva de las Manos – The Cave of Hands / Image: via ansalatina.com