A serac is a large block or column of ice that forms on a glacier, typically found in areas where the glacier is steep or has crevasses. These ice formations can vary in size and shape, often appearing jagged and unstable. Seracs are created when the glacier moves and fractures, leading to the accumulation of ice in distinct structures. Seracs can pose significant hazards to climbers and mountaineers, as they may collapse unexpectedly. They are commonly found in high-altitude regions, such as the Himalayas or the Alps, where glaciers are prevalent. Understanding seracs is crucial for safe navigation in these challenging environments.