The bay forms a fairly regular curve, broken on the French seaboard only by the estuaries of the Loire, Garonne, Adour and..
These are opposite to the large estuaries of the Queensland rivers, and might be thought to have been caused by fresh water from the land.
Towards the Black Sea, the less elevated Istranja Dagh stretches from north-west to south-east; and the entire south coast, which includes the promontory of Gallipoli and the western shore of the Dardanelles, is everywhere hilly or mountainous, except near the estuaries of the Maritza, and of the Mesta, a western frontier stream.
Projecting into these sounds and between the estuaries of rivers flowing into them are extensive tracts of swamp land - the best known of these is Dismal Swamp, which lies mostly in Virginia and is about 3 o m.
The harbours along the sounds and in the estuaries of the rivers are well protected from the storms of the ocean by the long chain of narrow islands in front, but navigation by the largest vessels is interrupted by shoals in the sounds, and especially by bars crossing the inlets between islands.
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