America's western states and Hawaiian islands house thousands of caves formed from volcanic eruptions, sometimes called lava tubes. This is the first comprehensive book on lava tube caves in the USA and the surprising variety of features found within. The book illustrates both common and uncommon features and explains how they form, through the photography of one of the world's most-published cave photographers. In a separate section, the book highlights lava tube caves open to the general public in national and state parks. You will enjoy 124 pages filled with over 340 full color pictures of some of the most stunning lava tube formations caught on film. Dave Bunnell, 2008, 124 pages, soft bound.