Radiating graben-fissure systems in the Ulfrun Regio area, Venus

► Detailed mapping of 66 radiating systems in Ulfrun Regio (200-240°E, 0-25°N). ► Relative ages of magmatic centres from cross-cutting relationships between radiating graben-fissure (dyke) systems. ► Younging trend of magmatic centres from SW to NE across study area. ► Regional cluster of radiating systems in SW linked to Atla Regio mantle plume.