Macfarlane takes readers through several "layers" of this archive:
: Facilities in Finland designed to store nuclear waste for 100,000 years, forcing us to think about a future far beyond human life.
Whether you are interested in the limited-edition artwork by Stanley Donwood (known for Radiohead's album covers) associated with the book or the deep philosophical questions Macfarlane poses, Underland is a reminder that the surface is only half the story.