Roman Britain is still throwing up secrets – and confounding our expectations | Charlotte Higgins

The discovery of a splendid mosaic in a villa buried under farmland is a thrilling find that sets the imagination racing

Walking the local landscape was a feature of many lives during the lockdowns in Britain last year. Not everyone discovered a ravishing Roman mosaic while rambling across the family farm, but Jim Irvine did. He contacted archaeologists at Leicestershire county council. That led to an excavation with the University of Leicester and the discovery of a third- to fourth-century villa. At its heart is a great mosaic, 11m by 7m.

What is so special about this mosaic is its subject. It is unique in Britain (though who knows what lies unseen beneath other fields?) in that it shows, in three cartoon-strip-like panels, scenes from the Trojan war. Specifically, it narrates episodes from the climax of Homer's Iliad. Scene one, the topmost strip, has the Trojan prince Hector and the Greek champion Achilles in battle. Scene two, Achilles drags the naked corpse of Hector behind his chariot. Scene three, King Priam, Hector's father - elaborately enrobed and wearing the jaunty red Phrygian cap" with which Roman iconography often identifies Trojans - watches as an attendant prepares a ransom for Hector's body, the corpse placed on one side of a scales while the other is heaped with golden objects.

Charlotte Higgins is the Guardian's chief culture writer and the author of Under Another Sky: Journeys in Roman Britain