Jonathan Bastian talks with Robert Macfarlane, fellow at Emmanuel College at Cambridge University, about his love of the mountains and his latest fascination with the subterranean world, which is the subject of his latest book, “Underland: A Deep Time Journey.” 

“I'm fascinated by where matter meets metaphor,” Macfarlane says. “The underworld is … this unbiddable, scarcely known, deep ground that we walk on every day, we walk on the crust, our feet are the things that keep us in contact with the earth, they are palms, as it were, to the ground.”

Macfarlane also shares his passion for language and metaphor in nature and his latest musical project, “Lost in The Cedar Wood.” with singer/songwriter Johnny Flynn. 

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