Bunch of keys? (11)

I believe the answer is:

archipelago

'bunch of keys?' is the definition.
(key can mean low-lying island)

This is all the clue.

(Other definitions for archipelago that I've seen before include "Group of many islands" , "the Philippines maybe" , "Large island group" , "watery domain" , "Philippines, say" .)

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

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