What a wise guy might take at an archaeological site? (1,3)

I believe the answer is:

a dig

'what a wise guy might take' is the definition.
(a wise guy might make a sarcastic dig)

'at an archaeological site?' is the wordplay.
'at' means one lot of letters go next to another.
'an' becomes 'a'.
'archaeological site?' becomes 'dig'.
'a' next to 'dig' is 'A DIG'.

I've seen this clue in The Hindu.

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