Complex sentence: The core of Vikos-Aoos (3400 hectares) is the spectacular Vikos Gorge, carved by the Voidomatis river, while Aoos gorge, mount Tymfi, with its highest peak Gamila and a number of traditionally preserved settlements form the park's peripheral zone.
Split into simpler sentences: The core of Vikos-Aoos (3400 hectares) comprises the spectacular Vikos Gorge, carved by the Voidomatis river. On the other hand Aoos gorge, mount Tymfi, with its highest peak Gamila and a number of traditionally preserved settlements form the park's peripheral zone.