Secluded valleys (5)

I think it could be either:

glens

dells

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

This is the entire clue.

(Other definitions for glens that I've seen before include "Narrow mountain valleys" , "Northern valleys" .)

I've seen this clue in the Universal, The Wall Street Journal and The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.