Tribe discovered in Thai wilderness (3)

I believe the answer is:

iwi

I'm a little stuck... Click here to teach me more about this clue!

'tribe discovered' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'thai wilderness' is the wordplay.
'IWI' is hidden within the letters.
But, I am uncertain how the hidden word is indicated.

'in' is the link.

Can you help me to learn more?

(Another definition for iwi that I've seen is " New Zealand community".)

I've seen this clue in The Sunday Times.

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