Here's a breakdown:

* Latitude: 40 degrees South places it roughly halfway between the Equator and the South Pole.

* Longitude: 120 degrees West places it in the western hemisphere, specifically in the South Pacific Ocean.

Here are some specific locations that might be near those coordinates:

* Near the coast of Chile: This area of the Pacific is close to the southern tip of South America.

* Off the coast of Easter Island: Easter Island is a famous Polynesian island located several hundred miles west of Chile.

It's important to note that those coordinates are in the middle of the ocean, so there is no landmass at that exact point.