Wall rock in Green Bay Cave shows lighter colors at the ceiling and upper sections, contrasting with a dark brown iron or manganese stain below.

Wall rock in Green Bay Cave shows lighter colors at the ceiling and upper sections, contrasting with a dark brown iron or manganese stain below. Image courtesy of Ondrej Hindl, Bermuda Deep Water Caves 2011 Exploration, NOAA-OER.

 

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Bermuda Deep Water Caves 2011: Dives of Discovery

NOAA Ocean Explorer Gallery

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