Merlin's Kin by Everett Coles
Approx. 98,550 words.
Published on October 18, 2009.
Newly edited and illustrated...
Drawn by the sleeping spirit of Merlin the Magician, five young friends lose their way in the subterranean chambers of an old ruin. They escape through a door to the outside to find themselves in a new and unbelievable world where mammoths draw gigantic caravans and two great blue moons light up the night sky & dynosaur-like birds help or hinder.