Intended as a companion to the author's previous Field Guide to Snow Crystals (1992), which dealt with snow on the microscopic level, this volume focuses on snow in the macroscopic world, where external forces that have acted on snow are interpretable by visible features. Focusing on snow in the mountains, LaChapelle (formerly geophysics and atmospheric sciences, U. of Washington) presents 77 black and white photographs, and in the accompanying text he explains what the surface features visible show about the composition of the snow and the likely physical movements of the snow. Annotation c. Book News, Inc., Portland, OR (booknews.com)