The tribesmen form the sinuous shape of a moving crocodile.
At the rear, the crocodile's tail, a court jester lightens the mood.
Momentarily, for what follows is a gruelling and potentially lethal rite of passage.
These young men will be mutilated to resemble crocodiles.
The boys are led into the spirit house,
running the gauntlet of blows from their elders.
Inside, they find sharpened lengths of bamboo.
The sacred act of scarring is about to begin.
The ritual is a closely-guarded secret.