Rock paintings are graphic forms of communication, used by prehistoric groups, and this one was found in the largest archaeological site in Brazil, the Sierra of Capivara National Park, in the state of Piauí.
The oldest recorded kiss was dated to more than 12,000 years ago and was painted with powdered hematite, a ferrous oxide mineral frequently found in soils and rocks, which provides a reddish inorganic pigment.
The Sierra of Capivara National Park is a monumental open-air museum, where spectacular archaeological and paleontological sites can be found, which testify to the presence of prehistoric humans and animals.
For its historical and cultural value, and for having the largest quantity and the oldest cave paintings in America, some of them dating back to 25,000 years ago, the park was declared a World Heritage Site by UNESCO in 1991.
