Right you are, Ngaire. From Wikipedia (Calving)

“Jakobshavn Isbrae Glacier
Also known as the Ilulissat Glacier or Sermeq Kujalleq in western Greenland, in an ongoing event, 35 billion tonnes of icebergs calve off and pass out of the fjord every year.

“Photographer James Balog and his team were examining this glacier in 2008 when their cameras caught a piece of glacier the size of the Lower Manhattan fall into the ocean.[16] The calving event lasted for 75 minutes, during which time the glacier retreated a full mile across a calving face three miles (five kilometers) wide. Adam LeWinter and Jeff Orlowski captured this footage, which is featured in the film Chasing Ice.”