Striations along the iceberg's surface, caused by the release of air bubbles trapped within the ice, repeat the linear pattern of snow and rock in the mountains beyond.
The Greenland Ice Sheet and associated outlet glaciers are melting at an alarming rate due to rising global temperatures.
Katla Volcano is covered by several hundred meters of ice from the Mýrdalsjökull Glacier in southern Iceland. This active volcano has an eruption interval of 20–90 years, causing massive mud flows, or jökulhlaup, when the subglacial eruptions melt the massive ice cap from below.
