Hottentot fold:

The Hottentot fold (better: curtain fold) is characterised by a great amount of skin in the upper eyelid. This causes the skin to develop curtain-like wrinkles at the edges of the eyes. As a result, the eyelid aperture is as narrow as in Mongoloids. This fold is particularly common in Khoisan, where it often appears in combination with the Mongolian fold. It is also present in some Native Americans. It usually increases with age and is strongest in old people. The North European hanging fold shows similar patterns.