"Among the oldest surviving examples of erotic depictions are Palaeolithic cave paintings and carvings. Some of the more common images are of animals, hunting scenes and depictions of human genitalia. Nude human beings with exaggerated sexual characteristics are depicted in some Palaeolithic paintings and artefacts (e.g. Venus figurines). Recently discovered cave art at Creswell Crags in England, thought to be more than 12,000 years old, includes some symbols that may be stylized versions of female genitalia. As there is no direct evidence of the use of these objects, it is speculated that they may have been used in religious rituals, or for a more directly sexual purpose.

Archaeologists in Germany reported in April 2005 that they had found what they believe is a 7,200-year-old scene depicting a male figurine bending over a female figurine in a manner suggestive of sexual intercourse. The male figure has been named Adonis von Zschernitz." :Wikipedia.