Tarn is a small mountain lake, often found in glacial valleys. These lakes are typically formed by the melting of glaciers, which carve out depressions in the landscape. Tarns are usually characterized by their clear, cold water and stunning natural surroundings, making them popular destinations for hikers and nature enthusiasts. The term tarn is commonly used in the context of the Lake District in England and other mountainous regions around the world. They can vary in size and depth, but they are generally smaller than larger lakes. Tarns provide important habitats for various wildlife and contribute to the local ecosystem.