Duncton Quest — William Horwood

  As the moles face a devastating threat, a new hero must rise and lead the followers of the Stone in this sequel to the classic fantasy Duncton Wood.
 
When Tryfan, son of Bracken and Rebecca, returns to the sacred Burrows of Uffington, he finds 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.

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 . . . But can he save his friends?