0 an area of low land between hills or mountains, often with a river running through it:
1 an area of low land between hills or mountains, often with a river or stream running through it
The house occupies a commanding position at the top of the valley.
Changing the course of the river would cause serious environmental damage to the whole valley.
Response rates were 96 per cent from the main valley and surrounding district.
Milk production dominates in the valley floors where access to irrigation allows for cultivation of permanent pastures.
These sites did not have the sherd densities of similar sites in the neighboring valleys.
