When they hit dry stretches, their animals are at risk from giant anteater holes hidden in the 4-foot-tall grasses.

FORBES: Journey: Painful pleasure

Their Cotswolds foundry, called Pangolin (after the scaled African anteater with a bronzy patina) has worked closely with some of Britain's leading sculptors and conceptual artists including Phillip King, Jon Buck, Ann Christopher, Damien Hirst and the late Angus Fairhurst.

ECONOMIST: Rwenzori Sculpture Foundation