Bertradaburg

About

The Bertradaburg is a ruined hill castle on a rock spur, 348 m above sea level (NN), above the village of Mürlenbach in the county of Vulkaneifel in the German state of Rhineland-Palatinate. It thus stands in the geographical centre of Merovingian Francia.

Adapted from Wikipedia (CC BY-SA). Photography via Wikimedia Commons.