An Ambulatory Head, Striding Across the Lands

From publisher blurb:

A Shadow of the Werird Wizard Quest for Master Heroes

When the shepherds came out of the Climb telling tales about a giant walking head, no one believed them. Sure, strange things crawl out of the New Lands all the time— but a giant walking head? The scoffers learned right away that they should have heeded those warnings, for one day a head the size of a small castle came stomping through their villages. It flattened houses, squashed people of significance, and scattered livestock, ruining many lives. Who sent this clomping cranium and why? Can it be stopped? That’s what people want to know, and the movers and shakers in nearby communities offer a reward to anyone who can find the answers.