LOFAR 14.6″ × 10.1″ resolution image of the galaxy cluster ClG0217. The image shows the roundish halo emission (A) at the cluster centre and relics (C, D, F, and G) in the outskirts. The first grey contour starts from 3σ, where σ = 160 μJy beam⁻¹. The subsequent contours are multiplied by a factor of two. The red contour level is 3σ, where σ = 335 μJy beam⁻¹ with a beam size of 45.7″ × 44.7″. The synthesised beam of 14.6″ × 10.1″ is shown in the bottom-left corner. The arc lines show the locations of detected X-ray SB discontinuities in the northern and southern edges of the halo that are found in Zhang et al. (2020).