National Geographic : 1965 Sep
Sliver of sand, Sable Island cuts the Atlantic near the edge of the continental shelf. Five thousand years ago, when the sea attained its present level after the last gla cial age, waters from the cold Lab rador Current (blue arrows) and warm Gulf Stream (red) gathered sandy glacial deposits into a dim ple on the shelf. Growing through the ages, the sandbank emerged as Sable Island. With its underwater bars, it forms a 50-mile menace to mariners. White Mist's voyage to Baddeck, Nova Scotia, with a stop over on Sable, crossed shipping lanes both old and new. Windjam mers and early steamers seeking the shortest course to Europe often passed within sight of the dread island. Many vessels, caught in its clutches, never escaped.