Goblin quest - Philip Reeve

The third fantastically exciting novel set in a land of magic
from the award-winning Philip Reeve.

The heroes of GOBLINS & GOBLINS VS DWARVES continue their
adventures outside the walls of Clovenstone castle.

Awaiting Skarper and Henwyn are powerful dark forces that must
be vanquished, monstrous creatures to be fought, and astonishing
mysteries to be solved.

They've fallen from the tower and battled the dwarves, now Skarper
and his troop of hapless goblins must save the Westlands from
a terrible fate: they're just not sure exactly what that
terrible fate might be.

Wannabe-hero Prince Rhind is trying to raise the long-lost land
of Elvensea, unaware that it holds a terrible, dark power, and
he's not going to let a bunch of goblins stop him from getting his
glory.

Chasing Rhind across land and sea, the goblins are off on
the quest of their lives in this fantastically exciting and brilliantly
funny final book in the GOBLINS series from
the celebrated author of MORTAL ENGINES.