From the awe-inspiring Grand Canyon to the majestic Victoria Falls, from the mysterious Cango Caves to the grand Mount Everest-100 Natural Wonders of the World is the perfect guide to discovering and exploring some of nature's greatest wonders. Discover some of the most extraordinary natural phenomena. Travel back in time to uncover the beginnings of some of the best-known sites in the world-what geological processes shaped them, which tribes first inhabited them, and how early explorers stumbled upon these incredible places.

Bill Yenne is the author of over three dozen books on military and historical topics, including his critically-acclaimed biography of Sitting Bull. He was a contributor to encyclopedias of both world wars, and is a member of the American Society of Journalists & Authors. He also co-authored a book with Air Force commander General Curtis E. LeMay. He lives in San Francisco, CA.