In the vicinity of Trier, you can find lava bombs, fossils, sour springs, travertine, geysers, maars, lakes, volcanoes, river landscapes, ores, meteorites, rock formations, vineyards, and much more, attracting countless visitors year after year, not least due to the UNESCO Geopark Vulkaneifel. The introductory section of this newly revised third edition presents the geologically and scenically diverse area between Gerolstein, Cochem, and Saarburg, providing a coherent overview of its geological development and history over the past 400 million years. Over 200 outcrop sites are described in the excursion section, offering insights into the rocks, their distribution, structure, and evolution. For example, the Devonian basement, its substrate, and structure are presented here for the first time based on new geological findings.