Most people picture the bison of Lascaux. They are a late and very small corner of the subject. Much of the world’s rock art is outdoors, on cliffs and boulders, a great deal of it is far younger than the Ice Age, and in parts of northern Australia painting on rock is still a living practice, with rules about who may repaint a site and who may explain it.
Painted or carved?
Archaeologists split rock art into two families, and the names do the explaining. A pictograph (from the Latin pictus, painted, and the Greek graphein, to draw) adds something to the rock: ochre, charcoal, manganese. A petroglyph (from the Greek petra, rock, and glyphein, to carve) takes something away, by cutting, pecking or rubbing the surface.
Plenty of panels mix the two. The trick to telling a carved mark from a painted one is to look from the side: a groove holds a sliver of shadow, paint doesn’t.
How do we know it’s that old?
The record holder is in Liang Metanduno, a cave on Muna Island off Sulawesi. Over a red hand stencil there, a thin mineral crust started to grow at least 67,800 years ago, so the hand underneath is older still. Europe’s oldest securely dated mark, a red disk on the Panel of Hands at El Castillo in northern Spain, is at least 40,800 years old.
Both numbers come from the crust on top. It is calcite, the same mineral as the limescale in a kettle, and as it forms it soaks up a trace of uranium from the water but almost no thorium. Uranium then decays into thorium at a known and very slow pace. Measure the ratio and you have a clock; since the crust grew over the image, the clock gives a minimum age.
Is the clock reliable? Its users say yes, if you sample carefully. In May 2026 the French rock art specialist Georges Sauvet argued that water seeping through a cave can wash uranium out of the crust and make it look older than it is, which would take thousands of years off some famous dates. Where the painters used charcoal there’s a second check, radiocarbon. At Chauvet, in the Ardèche, it points to two bursts of activity, about 37,000 to 33,500 and 31,000 to 28,000 years ago.
Earth, fire and a breath of paint
Ochre, a clay stained by iron oxides, gives yellows and reds, and the two are cousins. Heat yellow ochre to about 250-300 °C and it loses its water and turns red; at some sites the change looks deliberate, a bit of chemistry done at the hearth. Black came from charcoal or manganese.
The paint went on with fingers, pads of fur or moss, simple brushes, or a spray blown from the mouth. Engravers used flint. And the wall was part of the design, since a bulge in the limestone could become a bison’s back and a crack the line of a belly. A separate guide explains how the paint, the tools and the light worked.
Mostly animals, and a lot of hands
In the caves of Ice Age Europe the animals take the wall: horses, bison, aurochs, deer, mammoths, and at Chauvet lions and woolly rhinos too. People hardly appear, and when they do they’re sketchy. Nobody knows why. It is still one of the clearest choices the painters made.
Signs were there from the start. Genevieve von Petzinger counted 32 types of geometric sign in European caves, used between about 40,000 and 10,000 years ago, and found most of them already in the earliest phase. Reading hands, dots and grids begins with grouping them and noting where they sit.
Why paint in the dark?
We don’t know, and the oldest painters left no words to help. What the caves do show is effort. Many painted chambers are a long walk from daylight, where nobody lived, so every visit needed fire and a reason. That points to gatherings, teaching or ritual, without telling us which. People also came back to the same walls for thousands of years and drew new animals over old ones.
Light may have been part of the point. The archaeologist Marc Azéma thinks some animals drawn with extra legs or several heads were meant to move under a flickering flame, frame by frame, like a flip book. You can try the simple half of the idea in any replica cave: hold a torch low and to one side, and engraved lines you couldn’t see a moment ago come out of the rock.
Where to see it
Mostly in copies, which is how the originals survive. Lascaux has been closed to the public since 1963, and you visit Lascaux IV, a full-size replica in Montignac. Chauvet never opened at all; its replica, Grotte Chauvet 2, stands near Vallon-Pont-d’Arc. Altamira’s museum has a replica of the painted ceiling.
A few originals can be seen with a guide, such as the hands of Cueva de las Manos in Argentine Patagonia, or the open-air engravings along the river in Portugal’s Côa Valley. Access changes from year to year, so check the official websites before you go.
Sources
- A. A. Oktaviana et al., “Rock art from at least 67,800 years ago in Sulawesi”, Nature (21 January 2026).
- A. W. G. Pike et al., “U-series dating of Paleolithic art in 11 caves in Spain”, Science 336 (2012).
- G. Sauvet, critique of uranium-thorium dates for the oldest cave art (2026), reported in Archaeology Magazine, 26 May 2026.
- A. Quiles et al., “A high-precision chronological model for the decorated Upper Paleolithic cave of Chauvet-Pont d’Arc”, PNAS 113 (2016).
- “XRD study of the goethite-hematite transformation: application to the identification of heated prehistoric pigments” (HAL, Sorbonne Université).
- G. von Petzinger, The First Signs: Unlocking the Mysteries of the World’s Oldest Symbols (2016).
- M. Azéma and F. Rivère, “Animation in Palaeolithic art”, Antiquity 86 (2012).
- UNESCO World Heritage Centre, “Cueva de las Manos, Río Pinturas”, “Decorated Cave of Pont d’Arc, known as Grotte Chauvet-Pont d’Arc” and “Prehistoric Rock Art Sites in the Côa Valley”.
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