Colin Hoag

Landlocked and surrounded by South Africa on all sides, the mountain kingdom of Lesotho became the world's first water-exporting country when it signed a 1986 treaty with its powerful neighbour. An elaborate network of dams and tunnels now carries water to Johannesburg, the subcontinent's water-stressed economic epicentre. Hopes that receipts from water sales could improve Lesotho's fortunes, however, have clashed...