"Titan of the Abyss: Arizona's Grand Canyon" is an outstanding book dedicated to the majestic phenomenon of nature - the Grand Canyon of Arizona. The authors - Charles A. Higgins, Charles Fletcher Lummis and John Wesley Powell - explore the history, geology, ecology and cultural significance of this unique place. Through his own research and the illustrations that accompany the text, the book reveals the full majesty of this natural wonder that leaves people in awe of its scale and beauty. "Titan of the Abyss: Arizona's Grand Canyon" is an important work not only for naturalists and geologists, but also for all those interested in studying the nature and cultural heritage of the Eastern and Western concentric regions of the United States.