As the largest sub-region in LOCATION@1 , it encompassed a vast and varied landscape , from the mountainous regions of the LOCATION@2 to the semi-arid plains of northern LOCATION@3 .

As the largest sub-region in LOCATION@1 , it includes a vast and varied landscape , from the mountainous regions of the LOCATION@2 to the semi-arid plains of northern LOCATION@3 .
