Armored Behemoth

A behemoth of living armor, its back layered in jagged plates like a broken hillside. Moss clings to its hide, and small creatures nest between its ridges, mistaking it for stone until it moves. When roused, it rises with a grinding sound of earth splitting, swinging a club of fossilized bone that sweeps aside trees and walls alike. Its pace is slow but unstoppable, leaving deep furrows and shattered ground in its wake.