TIL beneath the Puerto Rico Trench is a mass so dense it has a gravitational pull on the surface of the ocean, causing it to dip somewhat. The Trench is also associated with the most negative gravity anomaly on earth, -380 milliGal, which indicates the presence of an active downward force.
en.wikipedia.orgSubmitted by Muted_Pomegranate738 t3_11mv7iw in todayilearned