“where I go to the dance section and battle 10-year-old girls for the chintziest fabric,” he deadpans. He wrangles these materials into fantastic ­sculptural ­costumes on a mannequin ...

No one knew what they would find at the other end. On they went, into the dark. “We crawled 10m down,” Piers Litherland says, “over limestone flakes covered in rather hard and sharp salt ...