Complex sentence: Heron Pike is a fell in the English Lake District, two kilometres east of Grasmere, it is not a fell of great significance being just a slight grassy rise on the long southern ridge of its parent fell Fairfield.
Split into simpler sentences: Heron Pike is a fell in the English Lake District, two kilometres east of Grasmere. Not a fell of great significance, Heron Pike is a slight grassy rise on the long southern ridge of its parent fell Fairfield.