1.   As a metaphor, consider the way rocks make their way to the valley floor.

2.   From where we stood, the ground fell away sharply to the valley floor.

3.   Go left here, along the valley floor before turning left again to return to your start point over the high moors.

4.   In the hummocky terrain of the valley floor the hollows, channels and gentle slopes are occupied by peat.

5.   Most of the town is built on the valley floor, but the east and west sides rise into gentle hills.

6.   Most of the town is built on the valley floor.

7.   So the ozone resides around the clock, with an exposure time much longer up here than on the valley floor.

8.   The cooking fires were smoldering when we reached the valley floor, but the hamlet was empty of people.

9.   The river meandered gently along the valley floor.

10.   The shallows lashed themselves to white foam over the limestone boulders of the valley floor.