Thirty kilometres along the dirt road from Yendi in Ghana's northern region I stop by a man dozing under a tree.
'Is this Gnani?'
'It is Gnani. You are welcome here.'
'I'm looking for the outcasts' camp.'
'Wha?'
I am loathe to use the local name.
'The outcasts?'
Nothing.
'The witches' camp.'
'Ah, the witches are down there. I will take.'
The young man gets on a bicycle and leads me 500 metres off the road and hands me to another who leads me further across country to a collection of rudimentary mud and concrete huts with thatch roofs and no doors. The camp - village - is almost deserted save for some elderly people aimlessly sitting, leaning and staring into space.
'Are these the witches?'
'Yes. What is your mission here?'
An old woman is sitting on a tree stump staring with cataracted eyes into the distance.
'Ask this woman what her name is and why she was sent here.'
The translation comes back: 'Fati Adam is her name. A child was killed - died - in her village, so she is the witch. The villagers know it and say she practised witchcraft. This man over here is a wizard.'
A forlorn man with a gruesome head injury is surprised to be the centre of attention.
'They are here for life. While they live here and have made the sacrifice the people are safe from them. The chief can take away their powers.'
I ask him to ask the woman how long she has lived in the camp.
'Many decades. Too long to remember.'
'Ask her where her home village is.'
'It is over that direction ... where she looks.'