
Techniques used by servants of the Inca empire to build canals 500 years ago are being resurrected in Peru to funnel much-needed water to remote mountain communities and the city of Lima below.
Gregorio Rios, 74, oversaw the renovation of the vast network of canals above San Pedro de Casta, a town 3,000 metres above sea level in the South American country’s Huarochiri district.