How does Sharon Kay Penman use imagery in Here Be Dragons?

Example of Imagery:

"Theirs was a land of awesome grandeur, a land of mountains and moorlands and cherished myths. They called it Cymru and believed themselves to be the descendants of Brutus and the citizens of ancient Troy. They were passionate, generous, and turbulent people, with but one fatal flaw. They proclaimed themselves to be Cymry—'fellow countrymen'—but they fought one another as fiercely as they did their English neighbors, and had carved three separate kingdoms out of their native soil."