Calgary Herald: It’s a little-known natural wonder along Baffin Island’s rugged east coast, a spectacular, 110-km-long channel lined by towering cliffs that âmdash; despite its extreme remoteness âmdash; is a mecca for base-jumping enthusiasts from around the world.But U.S. scientists who have reconstructed a cataclysmic glacial meltdown in prehistoric Canada say Nunavut’s Sam Ford Fiord is also a sentinel of danger in the age of climate change, showing just how quickly the planet’s massive coastal glaciers could disappear and send global sea levels surging. Their study, published this week in the journal Nature Geoscience, says the rapid melting of the fiord’s colossal, kilometre-deep glacier about 9,500 years ago is proof that similar features found today in Greenland, Canada and Antarctica could be lost “in a geologic instant.” Related LinkRapid early Holocene retreat of a Laurentide outlet glacier through an Arctic fjord