The dust within the rock

the long version

"In The Dust within the Rock, the third book in the Pikes Peak saga, an aging Joseph Rogier clings to his vision of finding gold in the great mountain and his grandson Marsh comes of age in the Rogier household. It is the early part of the twentieth century, in Colorado Springs, and the schoolhouse, the newsstand, the railroad, the mines--all become part of the younger man's emergence into adulthood and self-discovery"--Amazon.com.