where is mariana trench located
Click on above map to view higher resolution image. The Mariana Trench is the deepest part of the Earth's oceans, located in the western Pacific Ocean. It's deepest part is the Challenger Deep, which lies in the southern part of the trench. The depth of Challenger Deep is measured to be 10971 by a 2009 measurement.You are here: World map.lick on above map to view higher resolution image. The Mariana Trench is the deepest part of the Earth's oceans, located in the western Pacific Ocean. It's deepest part is the Challenger Deep, which lies in the southern part of the trench. The depth of Challenger Deep is measured to be 10971 by a 2009 measurement.