Complex sentence: The hilly and low mountainous areas of land are called the Pennines and the North York Moors and the hills of which can be seen directly to the west and east pf Streetlam respectively.
Split into simpler sentences: The hilly and low mountainous areas of land are called the Pennines and the North York Moors. The Pennines and North York Moors can be seen in the distance to the west and east of Streetlam respectively.