On the prowl between Altdorf, Airolo, and the Grimsel Pass. The author: geologist, mineralogist, and passionate prospector for 40 years. In this life's work, Johannes Dollinger takes you to his favorite collecting areas and on some of his most memorable excursions. Not always the most successful, but memorable for their special experiences. At the same time, you'll learn a great deal about the geology and mineralogy of these fascinating collecting zones. 332 pages, approximately 600 color photographs, sketches, and map excerpts. 23.5 cm x 30.5 cm. 2023