Black Crypt
Meadowythe has lost its magic, but Kym has a plan to get it back. She and her friends Mel and Tamly must creep into the heart of the mountain then down a crevasse deep enough to swallow them forever, to the crypt where Shardax the sorcerer buried his enemies. They had better not be afraid of dead things though ... Book three in the fast-paced magical adventure series by world famous fantasy author Ian Irvine. (from back cover).