How to make one
It is the same trick as spraying paint around a cardboard shape. Press a hand flat against the rock. Fill your mouth with liquid pigment, or put a hollow bone or reed to your lips, and blow. The colour lands around the hand and not under it, so when the hand comes away the bare rock keeps its outline, framed by a cloud of spray.
The pigment was usually red ochre, an earth coloured by iron oxide, or black from charcoal or manganese, ground fine and mixed with a liquid, often plain water. The edge gives away the distance: blow from close by and the outline is sharp, from further away the halo goes soft and wide. Since a stencil is a pictograph, paint added to the rock, it survives best in caves and under overhangs, and the rest of the kit, including how painters prepared their colours, varied from site to site.
The oldest, and the arguments about them
The current record holder is in Liang Metanduno, a cave on Muna Island off Sulawesi. A red stencil there lies under a thin crust of calcite that began to form at least 67,800 years ago. Uranium in the crust slowly turns into thorium at a known rate, so the crust can be dated, and the hand beneath it must be older.
Some of these early dates are fought over. At Maltravieso, in western Spain, a 2018 study dated one of more than 60 red stencils to over 66,700 years ago and credited it to Neanderthals; a 2024 study of the same cave came out much younger. Then in 2026 the French researcher Georges Sauvet argued that uranium can leak out of such crusts and make them look too old. Supporters of the method reply that careful sampling avoids the problem.
Later stencils are easier to date and easier to visit. Cueva de las Manos, in Argentine Patagonia, is covered with hands in several colours, most of them made between about 9,300 and 7,300 years ago. Australia has many stencil sites too, with hands, boomerangs and other tools, and long histories of repainting.
Whose hands were they?
Left hands win, in most caves. The simplest explanation is that most people are right-handed, so they held the spray in the right hand and pressed the left one to the wall. Size tells you age: most stencils are adult-sized, but a fair number were made by teenagers or children.
Men or women? Only as a probability. In 2013 the archaeologist Dean Snow measured 32 well-preserved stencils from eight caves in France and Spain, El Castillo, Gargas and Pech Merle among them, and judged about three quarters to be female from the relative lengths of the fingers. Hands overlap a lot between the sexes, so treat his result as an estimate.
Then there is Gargas, in the French Pyrenees, where many hands seem to be missing parts of fingers. Folded on purpose, as a kind of sign? Lost to injury or frostbite? Researchers still disagree.
What were they for?
A hand says “I was here”, and a crowd of hands says “we were here”, which may be why they gather at thresholds. Large and small hands side by side could record teaching, older people guiding younger ones through their first mark. In many recorded traditions a hand also wards off harm or calls on unseen forces. And sequences of left and right hands, folded fingers or hands lined up along a passage might carry information, especially where they sit beside dots, grids and other signs.
Probably no single answer fits every cave. The best test is the wall itself: how high the hands are, how they are grouped, and what they sit next to.
Where to see them
Cueva de las Manos, a UNESCO World Heritage Site since 1999, can be visited with a guide. In Europe, El Castillo in Cantabria and Gargas in the Pyrenees take small guided groups. Places are limited and rules change, so check the official websites, stay on the paths and never touch the wall.
Sources
- A. A. Oktaviana et al., “Rock art from at least 67,800 years ago in Sulawesi”, Nature (2026).
- D. L. Hoffmann et al., “U-Th dating of carbonate crusts reveals Neandertal origin of Iberian cave art”, Science 359 (2018).
- C. D. Standish et al., uranium-series dating of the hand stencils of Maltravieso cave, Journal of Archaeological Science: Reports (2024).
- G. Sauvet, critique of uranium-thorium dates (2026), reported in Archaeology Magazine, 26 May 2026.
- D. R. Snow, “Sexual dimorphism in European Upper Paleolithic cave art”, American Antiquity 78 (2013).
- A. W. G. Pike et al., “U-series dating of Paleolithic art in 11 caves in Spain”, Science 336 (2012).
- UNESCO World Heritage Centre, “Cueva de las Manos, Río Pinturas”.
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