The Kangjiashimenji Petroglyphs, in Xinjiang, north-west China, depict an intense fertility ritual and are some of the earliest known examples of what we these days might dub pornography.
The cast of about 100 figures, which range in size from more than nine feet tall to just a few inches, are taking part in what is obviously an orgy as fertility ritual. Women seem to initiate the proceedings. Males, on the other hand, are depicted as smaller with spindly stick legs, bare heads and mainly erect penises. Many of the figures appear to depict transexuals combining both male and female features. They have erect penises but are wearing female headgear and chest decorations.
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