A trio of researchers from Universidad de Cantabria and the University of Cambridge has found evidence suggesting that up to a quarter of all ancient handprints found on cave walls in Spain were made using children's hands. In their paper published in the Journal of Archaeological Science, Verónica Fernández-Navarro, Edgard Camarós and Diego Garate describe their study of ancient hand prints found in five Spanish caves and what they believe their findings suggest about ancient hand prints on cave walls in general.