Evolution of flare ribbons and the filament eruption as observed in IRIS C II SJIs is depicted. Panels (b) and (c) highlight the erupting filament, with white arrows indicating the filament’s increasing height over time. Panel (d) presents a clear view of the two ribbons forming in the flare region. In panel (e), the labeling of different ribbon regions is provided, as is described in Sect. 3.2. Finally, panel (f) illustrates the falling-back material during the later stages of the event.