The steep slope of the Laurentian Channel was the site of a disastrous submarine landslide at the southeastern end of the strait, triggered by the 1929 Grand Banks earthquake and leading to a tsunami that devastated communities along Newfoundland's south coast and parts of Cape Breton Island.
the steep slope of the laurentian channel was the site of a disastrous submarine landslide at the southeastern end of the strait triggered by the 1929 grand banks earthquake and leading to a tsunami that devastated communities along newfoundland's south coast and parts of cape breton island