Many remarkably shaped icebergs, some resembling castles, pyramids and archways pass close to the eastern shore of Labrador and Newfoundland in what is called Iceberg Alley. More than 2,000 icebergs a year float by this coastline, refrigerated by the cold water of the Labrador Current.
Spring and early summer are the best times to observe this spectacle, when the icebergs come closest to shore and make a phenomenal sight. (The Iceberg Finder app and IcebergFinder.com track their daily movements).
Iceberg seasons are different each year and difficult to predict. Last year strong anticlockwise winds and ocean currents drove 1,000 of them via Iceberg Alley into Atlantic shipping lanes, also threatening oil and gas production platforms in the Grand Banks off Newfoundland. The most famous iceberg is the one that sank the Titanic370 miles south of the Newfoundland coast in 1912.
Eventually, the cold Labrador Current meets the Gulf Streams warm waters south of Newfoundland and the surviving icebergs finally melt away. However, there have been some exceptional cases of icebergs that have managed to survive for extraordinary distances.
In June 1907 one was found to have sailed across the Atlantic and reached within a few hundred miles Southwest of Ireland.