Eqi glacier (or Eqip Sermia in Greenlandic) is located 80 kilometres north of Ilulissat, and you can only get there by boat. The front edge of the glacier is 30 stories tall; throughout the day, large and small chunks of ice break off at regular intervals. The Eqi glacier is one of the most active glaciers in Greenland.
It is an exceptional experience to be drifting in a boat in front of the glacier, waiting for chunks of ice to fall. When it happens, as you can see on the video, you will be fascinated by the deafening crash of the ice breaking off, followed by the huge splash when the ice hits the water.
The Ice Cap is made of snow, and when this snow is being pushed down by even more snow, it turns to ice. With time, the air, which naturally exists between the individual snowflakes, becomes air bubbles under pressure. So when the huge glacier calves, this air is released, causing explosive sounds.