This short film was created as a part of the Songs of the Caves research project. This aimed to explore the sounds of 5 caves that are part of the Cave of Altamira and Palaeolithic Cave Art of Northern Spain World Heritage Site. In the caves of La Garma, El Castillo, Las Chimineas, El Pasiega and Tito Bustillo the team explored the acoustics of the caves and their relationships with the cave art present. The art in the caves is up to 40,000 years old, and the team tested whether there was any evidence that sound played a part in where these visual motifs were placed. In addition various instruments were played and recorded in the caves, to demonstrate their acoustics and see what the caves might sound like with different sound sources. Many of the instruments were reconstructions of archaeological finds, including bone flutes which were made up to 30 or 40,000 years ago.