*.The majority of the 500,000-strong Borana tribe live in Kenya but some also live in Ethiopia and Somalia
*.Women use clarified butter (ghee) to keep their hair in perfect condition and wear it in elaborate plaits
*.Girls have the crown of their heads shaved,with the hair only allowed to grow after they marry
*.Other beliefs include the fear that having your photo taken removes some blood and steals your shadow
*.They also believe in a single god named Wak, although more are converting to Christianity and Islam
Split between Kenya, Ethiopia and Somalia, the 500,000-strong Borana tribe might be numerous but their fascinating customs and religious beliefs are entirely unique.
A nomadic people, their lives revolve around finding good grazing for their herds of camels and cattle, which combined, provide everything they need to survive in the striking semi-arid scrub land they inhabit.
But while men dominate village life and are in charge of the herds, women play a vital role and are in sole charge of building Borana homes and performing the elaborate dances that signal the birth of a baby.
With so little water to be had, their beauty routine is an unusual one and involves anointing their locks with ghee (clarified butter) to keep hair smooth and shiny.
Girls are given the most striking hairdos and wear the crown of their heads shaved until they marry, at which point the hair is allowed to grow back while the rest is plaited into elaborate designs.
But hair isn't the only part of life governed by the Borana's centuries-old laws.
The majority of rules apply to children who, for instance, aren't allowed to call anyone older than themselves by their first names.
Those names are also governed by tribal law and are inspired by the time of day they were born. 'Boys born in broad daylight are always called Guyo,' explains photographer Eric Lafforgue who took these incredible pictures.
'Some are named after a major event, a ceremony (Jil), a rainy season (Rob) or a dry season (Bon). Others are named after weekdays while a few get odd names such as Jaldes (ape), Funnan (nose), Gufu (tree stump) and Luke (lanky long legs).'
Whatever their parents decide to call them, all children are given a place in the social pecking order at birth - and once done, it is rare for it to be changed.
The luckiest are the sons of village chiefs who are placed in the top grade, daballe, at birth and show their status with long locks that make them resemble girls.
As future chiefs themselves, no one is allowed to punish them, even when they misbehave, while their mothers gain an honoured place in society and are frequently asked to bless well-wishers.
These women are also given special jewellery to wear usually made from colourfully beaded leather, enlivened on occasion with recycled Coca-Cola caps.
Those who aren't married to a chief, although often forced to share a husband, do get some special benefits including being in sole charge of who can and cannot enter their homes - spouses included.
'A wife always decides who will enter in the house,' explains Lafforgue. 'If her husband comes back and finds another man’s spear stuck into the ground outside her house, he cannot go in.'
Women are also in sole charge of raising their daughters and usually insist that they become excellent housewives. Men, when they come to choose a wife, will often judge the girl by her mother, which makes getting it right all the more important.
Older women are honoured as the keepers of tribal lore, although not all of it makes sense to Western ears. 'Old people are afraid of having their picture taken,' says Lafforgue. 'They believe that when you take their photo, you remove their blood and steal their shadow.'
