An American filmmaker has captured footage of the largest iceberg to ever break off Greenland.
The footage shows 7.4 cubic km of ice separating from Greenland's Illulissat glacier and the director James Balog compares the event to watching "Manhattan breaking apart in front of your eyes".
Mr Balog spent weeks in March 2007 waiting to capture the environmental event for his documentary Chasing Ice which will premiere in international cinemas later this week.
Anchoring 25 time-lapse cameras around the glacier, the phenomenal video shows 75 minutes of large chunks of ice splitting from the side of the mountain and then shooting up into the air.
"The cavern face was 300, sometimes 400 foot tall," Mr Balog commented during the film.
"Pieces of ice were shooting out from the ocean, 600 feet and then falling."
According to a study published in the journal Science, more than four trillion tonnes of ice from Greenland and Antarctica has melted in the past 20 years and has significantly pushed sea levels up.
Originally a climate change sceptic, Mr Balog became fascinated with icebergs after National Geographic sent him on an assignment to photograph the receding glaciers.
The photographer and filmmaker spent the past seven years chasing icebergs in Iceland, Greenland, Alaska and Canada.
Chasing Ice won the award for best documentary at the Sundance Film Festival and now has been shortlisted for an Academy Award.