Unique rock formations are natural structures created through geological processes such as erosion, weathering, and volcanic activity. These formations can take various shapes and sizes, often resulting in stunning landscapes. Examples include hoodoos, which are tall, thin spires of rock, and arches, which are curved structures formed by the erosion of softer rock layers. Many unique rock formations are found in national parks around the world, attracting tourists and geologists alike. Notable sites include Monument Valley in the United States, known for its iconic sandstone buttes, and Uluru in Australia, a massive sandstone monolith sacred to the Indigenous Anangu people.