On Horseback by Charles Dudley Warner is a travel narrative that provides a detailed account of the author's journey through the Southern United States, specifically the Appalachian Mountains, during the 1880s. The book vividly describes the natural beauty and rugged terrain of Virginia, North Carolina, and Tennessee, emphasizing the challenges and adventures of traveling on horseback in these regions. Warner's exploration of the Appalachian Mountains highlights the region's swift rivers, dense forests, and picturesque valleys. His observations of frontier life reveal the resilience and ingenuity of the local people, who live in remote areas with limited infrastructure. The absence of bridges and the necessity of fording rivers frequently is a recurring theme, illustrating the difficulties of travel and transportation in the post-Civil War South. The book also offers cultural observations, with Warner's characteristic humor and insight, portraying the customs, hospitality, and daily life of the inhabitants. His reflections provide a snapshot of the socio-economic conditions of the time, capturing the essence of the Southern United States during this period. Overall, On Horseback is a blend of travelogue, cultural commentary, and historical reflection.