Paperback edition of the larger hardcover book (http://www.blurb.com/my/book/detail/1047557 ). This smaller version may be enough to motiviate your young hiker to try something similar.
Twins Claire and Damien attempt a world record, trying to become the youngest hikers to complete the John Muir Trail "Yo-Yo" hike, but snow and meltwater conditions are harsher than expected and they have to settle for completing a "normal" John Muir Trail. Still a great accomplishment for hikers this young, and perhaps an inspiration to other young hikers to try something usually not considered possible for children.
Interested in photography since the mid 70s, and professional photographer for almost a decade in the 90s shooting motorsports (see http://www.champcar.com/gallery ), mostly for web and advertising. After ending the motorsports shooting started working in the area of internet video streaming. Still enojoys still photography, but from the point of view of somebody who "has been there" and is happy not to have to make a living with the camera any longer.