The City in Stone — Phyllis Eisenstein

The age of the Great Sorcerers past long ago. Now, they exist only as beings of myth and legend. Only the older elementals remember what the world was like when power and magic flowed freely. Three young apprentices use magic and elemental lore to discover where these mighty sorcerers lived. As they begin to excavate, strange things start to happen. Can Cray Ormuru stop them before the City in Stone reveals its dark secrets?