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Wall paintings in the Altxerri cave system in Gipuzkoa have been dated at 39,000 years old [Credit: El Pais] |
The investigation was launched in 2011 when Cantabria University members Aitor Ruiz and César González decided to concentrate on the upper Altxerri B gallery to date the paintings there. “It became immediately apparent that we were dealing with a completely independent grouping from the lower gallery,” noted Ruiz. It was then determined that a chronology for Altxerri B should be established. Diego Garate, a specialist in Upper Paleolithic cave art from the University of Toulouse, was brought on board.
As it was not possible to use the paintings for a direct dating – because they consist of non-organic material – the team employed other indicators such as bone fragments discovered in the gallery. A separate geological study showed that the mineral and other deposits in the cave, which had been sealed for thousands of years, were also different to those in the lower gallery, “which supports the dating of the paintings.”
The Altxerri paintings were first discovered in 1962. Ever since 1966 indications existed that there were further paintings in an upper gallery. Until now, they had never been fully investigated. Both the Altamira and Altxerri caves are listed as UNESCO World Heritage Sites.
Source: El Pais [September 17, 2013]