This book accompanies hikers on their journey through the Reintal Valley. At 11 stopping points, the hiking trail (801/R2) provides information about the geological development of the Reintal Valley and the Zugspitze. With a brief introduction to the geological history of the Alps and the Reintal Valley, as well as the rocks of the Partnach Gorge, the thematic focuses along the educational trail follow a chronological order: they approach the present and conclude the trail with young glacier stages and karst phenomena on the Zugspitzplatt, ultimately addressing the much-discussed melting permafrost at the Zugspitze. However, the main focus of the educational trail is in the Reintal Valley itself. Therefore, the relatively short yet very scenic hike to the Upper Reintalanger (just above the Reintalanger hut) already covers 9 of the 11 stopping points of the educational trail.