The Clay Cliffs are a natural rock formation on the South Island of New Zealand, next to the small township of Omarama. Omarama is Māori for „Place of Light“ and is a reference to the extraordinarily pure and clear sky in this area. Separated by deep ravines, the Clay Cliffs have a moonscape like look. They are made of layers of gravel and silt, deposited by rivers flowing from ancient glaciers over one million years ago. Compared to the surrounding mountains, which are over 250 millions years old, the Clay Cliffs are geologically young.