Large region in Barabhas Iarach (4)

I believe the answer is:

asia

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'large region' is the definition.
'asia' can be an answer for 'region' (I have seen 'populous region' mean 'asia' so perhaps 'region' could also mean 'asia'). I am unsure of the 'large' bit.

'in barabhas iarach' is the wordplay.
'in' indicates a hidden word.
'ASIA' can be found hidden inside 'barabhas iarach'.

Can you help me to learn more?

(Other definitions for asia that I've seen before include "Earth's largest continent" , "Great continent" , "The Orient" , "Heavily populated area" , "Continental land mass" .)

I've seen this clue in The Sun.

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