The paintings, like much prehistoric artwork, had degraded so much over time that they were difficult to identify with the naked eye. To overcome this, Ontañón and his team used a 3D laser scanning method, which reproduced the artwork on a computer.
“These technologies allow you to detect colors beyond the range of the visible spectrum (infrared to ultraviolet) and, in this way, ‘reveal’ paintings that at first sight are imperceptible or difficult to
distinguish”, Ontañón told IBTimes UK.
Story: Aristos Georgiou, IBT | Photo: Museo de Altamira/D. Rodríguez