Lying about  north of Puerto Rico in the Atlantic Ocean at the boundary between the Caribbean and North American plates is the Puerto Rico Trench, the largest and deepest trench in the Atlantic. The trench is  long and about  wide. At its deepest point (named Milwaukee Depth), it is  deep.
Lying about  north of Puerto Rico in the Atlantic Ocean at the junction between the Caribbean and North American plates is the Puerto Rico Trench, the largest and deepest trench in the Atlantic. The trench is  long and approximately  wide. At its lowest point (named Milwaukee Depth), it is  deep.