Rosemary Bank
Encyclopedia
Rosemary Bank is a seamount
Seamount
A seamount is a mountain rising from the ocean seafloor that does not reach to the water's surface , and thus is not an island. These are typically formed from extinct volcanoes, that rise abruptly and are usually found rising from a seafloor of depth. They are defined by oceanographers as...

 in the Rockall Trough in the northeast Atlantic. It is approximately 120 km west of Scotland.

The feature originated 70 million years ago as a result of volcanic activity. The sea bed immediately surrounding the seamount is approximately 2300m below sea-level; Rosemary Bank rises to approximately 2000m, the highest point being 300m below sea-level.

Around the base of Rosemary Bank is a thin "moat" where the sea-bottom is at a lower depth than the surrounding terrain.

It was discovered in 1930 by the survey vessel HMS Rosemary from which it takes its name.
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