The surface of the department consists of undulating and well-wooded plains, intersected by numerous valleys, and diversified in the north-east by hilly ground which forms a part of the mountain system of the Ardennes.
The undulating swing of the coach finally rocked them to sleep, though.
The surface is a slightly undulating plain.
Behind the lagoons an undulating plain stretches some 50 m.
The river banks, however, are fringed with trees, and in the more undulating lands the timber belts vary from a few hundreds of yards to 5 or 10 m.