There is a wide deep trench over 3 thousand miles long that goes from Turkey south almost to South Africa. It is called The Great Rift Valley.
The ocean trench is almost 7 miles deep.
about 6 miles deep
The Mariana Trench in the Pacific with a maximum known depth of 6.8 miles
It is a little over six and a half miles deep at it's deepest point.
NASA awards it's astronaut wings to anyone who travels more than 50 miles above the surface of the Earth, whereas the Fédération Aéronautique Internationale says space starts at 62 miles. It's kind of irrelevant as the deepest trench is the Mariana Trench at 6.78 miles which is the equivalent height of a commercial jet airliner. ------------------ NO, it takes hundreds of thousands of miles to got to the outer rim of outer atmosphere. the deepest a sea goes at most is about maybe 10,000 miles deep.
First off, its Mariana Trench, and it is at 11,033 meters (36,201 feet) deep
The Mariana Trench is the deepest trench in Earth's oceans.
Trench warfare was mainly promoted, where soldiers on both sides would dig trench lines hundreds of miles long, and make bayonet charges, generally a war of attrition. Numerous weapons were introduced to help break the stalemate, like the tank, chemical weapons, etc.
well we dont really know
7 miles down
The Aleutian Trench is a tectonic plate boundary that is between the Aleutian Islands and Alaska. It is over 2000 miles in length.
The intensity of earthquakes is very high. So it can be felt hundreds of miles away.