Complex sentence: To the East of Ness, ath the abse of the hill, there are a considerable number of springs and behind Ness Hall there is a large undercover Yorkshire Water resevoir, filled with water pumped from the springs.
Split into simpler sentences: To the East of Ness, at the base of the hill, there are a considerable number of springs. Behind Ness Hall there is a large undercover Yorkshire Water resevoir, filled with water pumped from the springs.