👉 Glacis, also known as glacial ice caps or glaciers, is a type of ice-covered mountain range. They are formed when the Earth's surface undergoes rapid melting and freezing during glacial periods like the Quaternary ice ages. Glacis can be categorized into two main types based on their size: small glaciers (less than 10 kilometers in diameter) and large glaciers (greater than 10,000 kilometers in diameter). They are often associated with mountains