Leafy place at the back of Hindhead produces a haven (7)

I believe the answer is:

harbour

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'haven' is the definition.
(I know that haven can be written as harbour)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for harbour that I've seen before include "Keep (thought) secretly (in one's mind); haven" , "Sheltered anchorage" , "Protected mooring" , "Dock" , "Tie up the shipping here" .)

I've seen this clue in The Irish Independent.

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