Full LOFAR field centred at VRO 42.05.01 and OA 184. This image has a resolution of 148″ and is made using only the core stations for best sensitivity to diffuse, extended emission. It has been primary-beam corrected. The central frequency is 143 MHz and the bandwidth is 59 MHz. The noise at the centre of the image is 4.4 mJy bm⁻¹; the colour scale to the right of the map is in Jy bm⁻¹. VRO 42.05.01 is the two-shell-shaped extended structure on the left-hand side of the image; the smaller semicircle is the “shell” and the wider semicircle the “wing”. OA 184 is the nearly circular shell to the right. The trail of diffuse emission to the west of OA 184 is referred to in the text as the synchrotron tongue.