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The Ancient Art of Altamira The aurochs, the mammoth, and the steppe bison are long extinct, but their painted likenesses still look relatively fresh across the walls and roofs of Altamira. Or so said Diego Garate Maidagan, who is one of the very few humans allowed to enter that exalted cave in northern Spain. The Technique of Prehistoric Painters Garate's specialism requires close attention to the etching or “pecking” technique whereby the artists used flint blades to outline figures on the rock before applying their ochre and charcoal. Altamira is rare and precious, he told me, because those reds and blacks are still so solid and vivid. The colours were preserved in the near-quarantine conditions imposed by that long-ago landslide. The Impact of Human Presence on Cave Art The site was opened to the public in 1917, partly closed in the 1970s, then shut for good in 2002, as a century or so of gaping admiration revealed the paint-stripping effects of moisture and carbon monoxide from the breath of too many beholders. A replica cave, with replica artwork, was created on an adjacent site. Today, only Garate and other select scholars have access to the original sanctuary. The Future of Cave Art Research In the far north of the Basque Country, the recent search for such apparitions has stirred “a little revolution”, by Garate’s reckoning. He and his colleagues in Santander planned a campaign to test a working theory: that the caves of northern Spain and south-western France were once lavishly decorated with pictograms and petroglyphs, now barely visible to the untrained eye. Unlocking the Secrets of Prehistoric Image-Making The general idea, Garate told me, was to reverse-engineer the processes of prehistoric image-making: to unpack the practical, mechanical decisions of the artists, and thus to better understand their skill set, their knowledge base, their means and modes of communication. One project gauged the “luminous intensity” and “radius of action” achieved by burning different woods and fats to light the cave.

In a striking reversal of a century‑old judgment, researchers have confirmed that the red bands on the walls of Bacon Hole in South Gower are not mineral stains but the United Kingdom’s oldest known Palaeolithic cave paintings. 1912: The Guardian reports the discovery of red pigment bands in Bacon Hole. 1928: The same outlet declares the markings a natural phenomenon. 2026: Uranium‑thorium analysis dates the pigments to 17,100 years ago, redefining British prehistory. The Rediscovery of Bacon Hole’s Red Streaks as Palaeolithic Art Original investigators William Sollas and Henri Breuil argued in 1912 that the horizontal red lines represented intentional art. Their interpretation was dismissed in 1928 after the newspaper cited mineral seepage as the cause. The new study, led by Dr George Nash of the University of Liverpool and Coimbra University, re‑examined the panels with modern archaeometric techniques. Uranium‑Thorium Dating Confirms 17,100‑Year‑Old Paintings Using uranium‑thorium dating on the pigment’s calcite matrix, the team obtained a calibrated age of 17,100 years before present. Chemical analysis identified a mixture of calcite and clay, applied with finger strokes, confirming deliberate human agency. Implications for Understanding Upper Palaeolithic Wales The findings place Wales at the forefront of Upper Palaeolithic activity in north‑western Europe, suggesting that hunter‑fisher‑gatherer groups exploited the periglacial landscape of the emerging Bristol Channel shoreline. The research also aligns with earlier discoveries such as the Cathole Cave paintings dated between 14,500 and 12,500 years ago. Future Research and Conservation Prospects The cave, managed by the National Trust of Wales, is slated for official announcement and potential scheduling as a protected monument. Ongoing collaboration among the universities of Southampton, Swansea, and international partners aims to map additional sites along the Gower coast and refine the chronology of early human occupation.