In the Book of Genesis, the river passing through Eden divides in four after watering the garden. One branch winds through Havilah, a land in which gold is to be found, of exceptional purity. 

On a Christian message board, one believer is convinced they have triangulated the co-­ordinates of the gold near Eden, urging others to join them in a lucrative extractive opportunity. ‘Well I believe I have found it,’ they write. ‘No mines have been started in the area. I need geologists.’