Champion of Hollow Earth
by James R. Tuck
The Kurg, a race of Nazi lizard men, march through Hyperborea, a land that exists inside a Hollow Earth, decimating entire civilizations and turning people into slaves. But the final spell of Hyperborea's greatest wizard calls to Hollow Earth a Champion: Big Jim Magnum, a badass private investigator from 1978 Detroit. The first action-packed digest novel in a new series.