Sandatlas – Discover Geology Through Images

Sandatlas is an educational website dedicated to making geology understandable and engaging through visually rich content. Whether you are a student, educator, amateur rock enthusiast, or simply curious about the Earth beneath your feet, Sandatlas offers clear explanations and hundreds of photographs to bring geological concepts to life.

Here you will find illustrated articles about rocks, minerals, sand types, and the materials that make up our planet. The site also features in-depth guides to important geological terms and phenomena — all accompanied by high-quality images to help you visualize and learn.

Sandatlas is created and maintained by Siim Sepp, a geologist, writer, and nature photographer from Estonia. His goal is to bridge the gap between science and everyday curiosity by using photographs as a storytelling tool.