Glacial outburst floods, also known as jökulhlaups, occur when water trapped by a glacier is suddenly released. This can happen due to the melting of ice, the failure of a natural dam, or volcanic activity beneath the glacier. The rapid release of water can lead to massive flooding downstream, often with little warning. These floods can carry large amounts of sediment and debris, causing significant changes to the landscape. They can also pose risks to nearby communities, infrastructure, and ecosystems. Understanding glacial outburst floods is essential for managing their potential impacts in regions with glaciers, such as Iceland and Alaska.