The Challenger Deep is located in the Western Pacific Ocean, at the southern end of the Mariana Trench near the Mariana Islands group. According to the August 2011 version of the GEBCO Gazetteer of Undersea Feature Names, the Challenger Deep is 10,920 m (35,827 ft) ±10 m (33 ft) deep at 11°22.4′N 142°35.5′E﻿ / ﻿11.3733°N 142.5917°E﻿ / 11.3733; 142.5917. [1] This location is in the ocean territory of the Federated States of Micronesia.