A tarn is a small mountain lake or pond, typically formed by glacial activity. These bodies of water are often found in high-altitude areas, nestled in depressions or basins created by glaciers. Tarns can vary in size and depth, and they are usually fed by melting snow or rainfall. Tarns are important ecosystems that support various plant and animal life. They often have clear, cold water and can be surrounded by rocky terrain or alpine vegetation. Popular among hikers and nature enthusiasts, tarns offer scenic views and opportunities for outdoor activities like fishing and photography.