Valleys (5)
'valleys' is the definition.
('vale' can be a synonym of 'valley')
This is all the clue.
'valleys' is the definition.
(dale is a kind of valley)
This is the entire clue.
(Other definitions for dales that I've seen before include "Leads into poetic valleys" , "Yorkshire valleys" , "Open river valleys in hilly areas" , "(North England) valleys" .)