Challenger deep.
The challenger was able to protect the challenger deep by sleeping in the ground so far down.
The Challenger Deep is in the north Pacific, southwest of Guam.
Challenger deep is in the ocean, it was never explored by spacecraft.
Challenger Deep is a very deep spot on Mariana's Trench. Mariana's Trench is very long and Challenger Deep is just a tiny part of it, considered the deepest part.
the average temperature of challenger deep is 25 to 27 degrees Celsius (85 to 86 degrees Fahrenheit).
Challenger Deep.
"Shallow" is the opposite of "deep".
The opposite of "deep", as in "deep water", is "shallow". If you mean "deep" in a metaphorical sense, such as a "deep thought", the opposite might also be "superficial".
Marianas Trench
It is in the Mariana Trench!
Challenger deep