He is in Asia, in an isolated area

Correct me where I go wrong, please:

‘in Asia ‘—predicate adjective

in an isolated area —this is an adverb, modifying the adjective ‘in asia’ by saying where in Asia.

Ta

He is in Asia, in an isolated area

Correct me where I go wrong, please:

“in Asia” is a prep phrase (adverbial) indicating where he is. Adverbial prep phrases are common after the verb to be. It’s a bit like saying “He lives in Asia.”

“in an isolated area” is also an adverb, modifying the adverbial prep phrase “in Asia.”