Center Land — Eileen Sheehan

Traveling to the center of the earth to retrieve her son from Center Land is intense enough without having to deal with Amazon rogue women, prehistoric animals, and... yes... the aliens and zombies that they thought they'd left on the surface are there too!  Is there no escape from the horror?  They have a plan to end the aliens and zombies once and for all... but... will it work?  The answer is in "Center Land", book three of the apocalyptic romance-thriller series, Kendra's Journey.