A submerged ridge. Reefs usually angled downstream from a point of land or the head of an island. Typically, they took shape as a gradual slope that rose to within a few feet of the surface, followed by a sharp drop-off.

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For river cruises, train journeys and other leisure travel, domestic or international, contact our favorite travel agent, Phyllis Dale. She has the experience you need when planning a vacation.
Note: Phyllis does not book day excursions.
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