The geographical term for high flat land is plateau. Plateaus are elevated areas of land that have been uplifted through geological processes and typically feature steep sides. They can be found in various regions around the world, contributing to diverse ecosystems and climatic conditions. Due to their elevation, plateaus often experience cooler temperatures than surrounding areas, which can support distinct forms of vegetation. They are important for agriculture and can contain valuable resources, making them significant for human settlement and economic activity.