Renowned for creating art outdoors and from natural materials, British artist Andy Goldsworthy here offers an inside look at an intriguing project. Following the route along which sheep were once driven from Scotland to markets in the north of England, he builds, dismantles, and rebuilds along the way a red sandstone arch.Made of blocks hewn from a Scottish quarry, the arch begins its journey in a dilapidated stone sheepfold. Goldsworthy's color photographs...