Labyrinth of Fire (Island of Fog, Book 2)

"Hal Franklin and his friends have made it safely into Miss Simone's world. Now the shapeshifters are about to meet their alternate kinds. The people of the new world make use of special 'energy rocks' from deep within the ground to power homes and advance technology. But the superstitious centaurs are convinced that the mining of these rocks incurs the wrath of Mother Nature, and demand a return to an older, simpler lifestyle. Meanwhile, the village in the north is under constant attack from harpies and dragons, and the villagers desperately need help. Hal and his friends join forces to deal with these serious issues. Together, with their individual talents, they can conquer any problem--or so they've been told."--P. [4] of cover.