Discover the natural wonders of the Patagonian Andes - from pristine glaciers and alpine lakes to puffing fumaroles and steaming thermal springs. Scale top-of-the-world summits and trek across rolling plateaus and lava landscapes. Grab this authoritative guide and explore the rugged beauty of one of the world's few remaining truly remote areas. Detailed descriptions of 31 treks in Chile and Argentina, including bonus side trips and alternative routes. Clear two-color contour maps for every trek. Illustrated guide to the region's distinctive wildlife. Comprehensive gear, safety and language sections, along with advice on environmentally responsible trekking. Essential planning information covering transport, trail access and accommodation.