Zoom-in on the reverse drift herringbone together with their location at two frequencies. Panel a: The reverse drift herringbones are shown in a zoomed in dynamic spectrum from ORFEES and can be imaged by the NRH at 150 MHz (blue dot) and 173 MHz (magenta dot). Panel b: Radio contours at 40 and 80% of the maximum intensity level at the time and frequency denoted by the blue and magenta dots in panel a overlaid on an AIA 211 A running difference image. The centroids of these radio contours are also shown as plus symbols with the corresponding colour.