British artist Andy Goldsworthy, known for creating art outdoors and from natural materials, has now built a 2,278-foot stone wall at Storm King Art Center, a sculpture park on the Hudson River in Mountainville, New York. This sensitive and detailed response to the land-former farmland in an area once rich in stone walls-is one of his most impressive and important permanent artworks. The book’s stunning color photographs show the wall from every vantage point and in all four seasons, and document ephemeral work made around it. Kenneth Baker’s essay considers the Storm King wall in the context of Goldsworthy’s other work.