Lyric discussion by Caldwell91 

Cover art for Big Log lyrics by Robert Plant

Plant's lyrics were often influenced by the books of J.R.R. Tolkien. Big Log is a mythical, extended metaphor for a lost love: "My love is in league with the freeway... My love is the miles and the waiting." A Big Log is common lingo of tractor trailer drivers. It is the book in which their road hours are logged, therefore the connection between the road and love and the countless hours we all log on both.