The cave at La Roche-Cotard cave in Loire, France, where 57,000-year-old engravings have been found (Picture: Kristina Thomsen/Technical University of Denmark/PA)

Wavy, triangular markings thought to be the oldest known engravings by our extinct relatives the Neanderthals have been discovered in a cave in France.

The finger markings, said to be ‘organised and intentional’, were likely made by Neanderthals more than 57,000 years ago, scientists have said.

They were found on La Roche-Cotard cave walls in the Centre-Val de Loire region of northern France.

The researchers said their findings, published in the journal Plos One, add to evidence that Neanderthals were ‘complex and diverse as those of our own ancestors’.

The authors wrote: ‘Fifteen years after the resumption of excavations at the La Roche-Cotard site, the engravings have been dated to over 57,000 years ago… making this the oldest decorated cave in France, if not Europe.’

For the study, Jean-Claude Marquet, of the University of Tours in France, and his colleagues analysed the wall markings, also known as finger flutings.

The team created 3D models of the engravings and compared them with known human markings.

The researchers concluded that the wall markings were deliberate, based on their shape, spacing, and arrangement.

The types of markings found were circular, dotted, triangular and wavy.

The organised and intentional shapes may be symbolic creations, according to the researchers, although they added: ‘It is not possible for us to establish if they represent symbolic thinking.

‘Nevertheless, our understanding of the relationship between Neanderthals and the symbolic and even aesthetic realms has undergone a significant transformation over the past two decades, and the traces preserved in the cave of La Roche-Cotard make a new and very important contribution to our knowledge of Neanderthal behaviour.’

On the left, is a ‘circular panel’ and on the right, a ‘wavy panel’ (Picture: Claude Marquet/University of Tours/PA)

The team also dated cave sediments and concluded that La Roche-Cotard cave became closed off by infilling sediment around 57,000years ago, long before modern humans became established in the region.

The markings, along with stone tools found in the cave, provide ‘strong evidence that these engravings are the work of Neanderthals’, the researchers said.

The authors said the wall engravings pay ‘tribute to this lost humanity, whose role in the biological and cultural evolution of humans is undergoing profound revision’.

The wrote: ‘In terms of culture, we now have a better understanding of the plurality of Neanderthal activities, attesting to elaborate and organised social behaviours that show no obvious differences from those of their contemporaries, anatomically modern humans, south of the Mediterranean.’

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The engravings are thought to be 57,000years old.