Deepest Atlantic Trench

So what is this doing on the bottom? Conventional mainstream cannot and will not acknowledge.
The Puerto Rico Trench is the deepest place in the Atlantic Ocean, plunging more than five miles below sea level. Lying about 75 miles north of the island of Puerto Rico, this long, narrow gash in the seafloor extends to the east for nearly 1,100 miles. According to NASA, beneath the trench is a mass so dense it has a gravitational pull on the surface of the ocean, causing it to dip somewhat. It also has a negative effect on the accuracy of navigational instruments. Some say the cause of the Bermuda Triangle.

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