The best-known examples of prehistoric rock art are the cave paintings of Altamira, Lascaux, Niaux, and other sites in northern Spain and southern France. But rock art is found in many different parts of the world, notably Australia and Africa, and new sites continue to be discovered. In 1994 a new site, the Chauvet cave, was discovered in southern France. The paintings on the walls of this cave were determined to have been made more than 30,000 years ago, making them the oldest known cave paintings. The skill with which these paintings were made sheds new light on the abilities of the earliest cave artists.
Caves are found in limestone areas. Today many caves are dry because the water that formed them has sunk to lower levels. Some caves are very long and have many complicated passages.
The opening of the Niaux cave, in the French Pyrenees, is halfway up a hillside, above a mountain stream. After several hundred feet, a series of red painted dots, dashes, and lines appears just where a narrow passage leads off to the right. At the end of a wide passageway, there are dozens of paintings of bison, ibex, and other creatures. These paintings have lasted so long because weather conditions never change in deep caves. Variations of dampness, temperature, and light quickly destroy paint.
The artists painted with natural lumps of ocher, a material easily found in the ground. Crushed ochers give a red, orange, or yellow color. Charcoal black was also used. It has often survived despite the fact that it rubs off easily. The colors were put on the walls in various ways, sometimes with a brush. A small bone, snapped off at the end, may have been used as a brush handle. To make bristles, the artist may have taken hairs from a horse's mane, bent them in half and inserted them into the bone, and then chopped off the ends to a suitable length. The colored, powdered ochers were probably mixed with melted suet, or fat. Perhaps an ox's shoulder blade served as a palette. It was dark in the caves, and the artist had to have a small fire to see by and to melt the fat. Indeed, small stone lamps have been found in the caves. A twist of moss could have been used to make a wick.
Usually figures of animals were made. But there were also signs, patterns, and simplified drawings of natural things. Many of the animals that lived in the Ice Age no longer exist. But we know that they usually had long hair to help them keep warm. In the drawings we can see the great woolly elephant, the woolly rhinoceros, the cave bear, and the cave lion. Some of the animals, such as the reindeer, still flourish. But today these animals are found in regions much colder than southern Europe, where the cave drawings were made.
The pictures of animals were often painted and engraved over each other. Like the layers of homesite rubbish, the figures underneath must be older than those that cover them. One can see, too, that not all the drawings and paintings were made in the same way.