Gallery of spectral tomography maps between 1.5 and 5.5 GHz at 2.5″ resolution. The images demonstrate that there are structures with different spectral indices overlapping with each other (shown with dashed red and green lines). The red lines in each frame indicate spectra that are flatter than the listed α_i, while the green lines indicate spectra steeper than the α_i. This implies that the relic is composed of multiple overlapping structures. The small-scale structures are shown with green arrows. The emission with a spectrum steeper than α_i appears positive (black regions), while flatter spectrum emission appears negative (white regions). The range in α_i is −1.05, −1.16, and −1.25.