Duncton quest - William Horwood (Duncton Chronicles #2)

When Tryfan, son of Bracken and Rebecca, returns to the sacred Burrows of Uffington, it is to find dreadful signs of death and destruction. For out of the chilly North have swarmed the grikes, a fanatical tribe of warrior moles bent on destroying all believers in the powers of the Stone.

Brave Tryfan's duty is clear – to muster and protect the few remaining Stone followers from the evil that seems certain to engulf them. With only a frail and timid mole named Spindle for company, he sets off on an epic journey . . .