The Laurentian Abyss is an underwater depression off the eastern coast of Canada in the Atlantic Ocean. Not a trench, but more of an "underwater valley", it is estimated to be at most ~19,685 feet (3.7 miles; 6.0 km) in depth. The Laurentian Abyss is a product of glaciation and water currents from the Saint Lawrence Seaway.
The trench is the site of hydrothermal vents with their own sub ecosystems independent of sunlight.
Read more about Laurentian Abyss: In Popular Culture
Famous quotes containing the word abyss:
“All human beings hang by a thread, an abyss may open under their feet at any moment, and yet they have to go and invent all sorts of difficulties for themselves and spoil their lives.”
—Ivan Sergeevich Turgenev (1818–1883)