This is the Ethelfleda Monument, which stands beneath the walls of Tamworth’s 800-year-old Castle, and commemorates Ethelfleda, Lady of the Mercians, the Warrior Queen who fought the Danes - and won. Ethelfleda was the daughter of Alfred the Great (he burnt the cakes, remember) and she is thought to have raised the mound on which the castle stands, and built a fortress, with earth ramparts and a wooden pallisade… read about her here….  http://goo.gl/vTUc8