The Grand Canyon is a huge and amazing place, and Todd Martin has built a huge and amazing book that describes the backcountry as never before. Technical stuff - for sure. Non-technical stuff - a TON of that stuff too. With amazing beautiful photographs. Lots of 'em. 

This is the 2nd edition of this book.

New revised printing 2024 is split into two volumes for easy sharing; includes numerous updates and more pictures.

SPECS:

• Size: 6" x 9" x 1-1/8" 
• Weight: 2 lb 8 oz aka 1134 grams 
• 500 pages, over 100 canyons.