"Long's smart and epic tale takes the reader into a Dantesque world, a journey to the center of the earth for the new millennium. And what is found there is both horrific and entrancing: a system of tunnels that network beneath the earth, and homonid relatives of Homo sapiens evolved to live in the depths of what appears to be hell." (Baltimore Sun)

"A return to the fantastic epics readers associate with H.G. Wells or Jules Verne." (Chicago Tribune)

"As frightening and exhilarating as anything in heaven or hell." (Denver Rocky Mountain News)