This book explores the geological wonders and subterranean secrets of three iconic South Dakota landmarks: Mount Rushmore, Badlands National Park, and Wind Cave National Park. It provides an in-depth look at the history, geology, and visitor experience of these distinct yet complementary natural and historical sites, focusing particularly on the underground aspects of Wind Cave and the unique geological formations of the Badlands.

This guidebook is likely to be a valuable resource for travelers planning a visit to the South Dakota region, offering a comprehensive overview of Mount Rushmore, Badlands, and Wind Cave. The focus on 'going underground' suggests a particular emphasis on the subterranean aspects of Wind Cave, appealing to those interested in spelunking or cave geology. The inclusion of historical context for Mount Rushmore and the geological explanations for the Badlands indicates a blend of history, science, and travelogue. It is positioned as an informative companion for understanding the natural and cultural significance of these national treasures.