This paper examines how EarthCaches, published on the website http://www.earthcache.org, influence non-formal learning in the field of geoscience. First, we investigate where the learning opportunities in the non-formal learning process of earthcaching are. Second, the authors analyze the information conveyed by EarthCaches. As it is not possible to analyze all EarthCaches, we have restricted our study to the ones dealing with glacial features located in Bavaria and focused on the tasks and illustrations using the method of content analysis (FRÜH 2010). Therefore the authors developed different category systems in relation to illustrations, tasks, and glacial features focused on by the EarthCaches. The authors found that the illustrations and tasks used in the cache descriptions have some didactical quality, but reason they could be improved methodologically and scientifically. As a result, the authors give advice on creating more effective EarthCaches.