Engravings of sexual representations and signs.

Top: La Madeleine (Dordogne). Engraved on a semi-cylindrical staff, bear's head with outstretched tongue in conjunction with a realistic representation of a phallus and a vulva.

Bottom: Massat (Ariege). Engraved on a perforated staff, bear's head in conjunction with a feathered (male) sign and an oval (female) sign. The theory that prehistoric man employed male and female signs corresponding to sexual representations -- the basis of Leroi-Gourhan's system of explation of rock art -- rests in large part on the juxtaposition of these engravings.

Abstract types of vulvas and female figure.

Rock containing five red vulva symbols and a black feathered shaft representing a phallus