On radio, covers glens (5)

I believe the answer is:

vales

'glens' is the definition.
(I've seen this in another clue)

'on radio covers' is the wordplay.
'on radio' indicates a 'sounds like' (homophone) clue.
'covers' becomes 'veils' (I've seen this in another clue).
'veils' is a homophone of 'VALES'.

I've seen this clue in The Everyman puzzle in The Observer.

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