The Book Professional Review and Guide
"At the top of the tough 4.4-mile, 1,800-foot, rocky, gravel-road climb, rest your legs, stop at the rocks, and tell the world you came. It's a tradition to write your name, and anything else that strikes your fancy, in the notebook in the metal box there. The Book rewards you at the top of the climb, but the real reward is the fast 2.1-mile singletrack descent that follows- a plunge form the rocks to the road that parallels the South Branch Irrigation Canal and the end of the loop.
The route is through dry, sun-exposed sagebrush country overlooking Ellensburg, the Kittitas Valley, and beyond. The views get better as you climb higher, and are another reward for your efforts. Advanced-level climb; without tree cover, overheating becomes a factor on hot days."