This folder features rock formations of any kind - you can put here even the landscapes where you wish to emphasize the rocks in that landscape as dominant structure. For that, you also need to classify your image as geology when submittiong it. Sand formations also belong here, as do details such as examples of different crystals, rocks and fossiles, just bear in mind to avoid people and human made stuff in the image and if you photograph samples form your collection or museum, please reduce the surrounding area as much as possible.