HMRG Deep
English
Etymology
From the Hawaiʻi Mapping Research Group, which performed a sonar survey of the region in 1997, and discovered the deep.
Proper noun
HMRG Deep
- Former name of Sirena Deep.: A deep in Mariana Trench, Pacific; second deepest place in the Mariana Trench, and third deepest place on Earth.
Coordinate terms
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