Complex sentence: Nethermost Pike is also counted as a Wainwright because it was given a chapter in Alfred Wainwright's "Pictorial Guide to the Lakeland Fells" and is the second highest of the Eastern Fells and the ninth highest of all Wainwrights.
Split into simpler sentences: Nethermost Pike is also counted as a Wainwright because it was given a chapter in Alfred Wainwright's "Pictorial Guide to the Lakeland Fells". It is the second highest of the Eastern Fells, and the ninth highest of all Wainwrights.