"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 )