Carbonate rocks forming an Alps-like landscape on Dive 4 at Hadal Ridge.

Carbonate rocks forming an Alps-like landscape on Dive 4 at Hadal Ridge. Image courtesy of NOAA Office of Ocean Exploration and Research, 2016 Deepwater Exploration of the Marianas.

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Related Links

Mission Log: July 5: Leg 3: A Geological Tour of the Northern Marianas!

2016 Deepwater Exploration of the Marianas

NOAA Ship Okeanos Explorer