A Collaboration with Nature by Andy Goldsworthy
You've got to see this book to believe it, 120 full color photographs of Goldsworthy's natural creations. Scottish artist Andy Goldsworthy uses a seemingly infinite array of purely natural materials, from snow and ice to leaves, stone, and twigs in the creation of his one-of-a-kind sculptures. Goldsworthy's approach is to interrupt, shape, or in some other way temporarily alter or work with nature to produce his fragile pieces. As with most of his work, ultimately, the materials returned to their natural state, leaving no trace of the artwork's existence save for the stunning photos in this book.

I guarantee you'll love this book. It would make a great gift. And he has others!