Cave painting
Today, there are about 350 caves known which have paintings in them. Many are in France and Spain. The best known are probably the caves of Altamira (in Spain), Lascaux (in France), or Creswell Crags in England. Sometimes, paintings were also done on cliff faces. Fewer of those have survived though, because of erosion. One such example are the rock paintings of Astuvansalmi (in Finland).