"On the Nalakihu-Citadel Trail, Wupatki National Monument Park, Arizona" is a book written by the Southwest Parks and Monuments Association that takes the reader on an exciting journey through the western United States. The book details the scenic spots and highlights of Arizona's Wupatki Monumental National Park. The authors share valuable advice on routes, archaeological discoveries and natural unique features of this magical corner of nature. "On the Nalakihu-Citadel Trail" is an excellent book for hikers and nature lovers who want to appreciate above all else the beauty of the wild nature and historical treasures of Arizona.