Enlarged region (∼52′×43′) of the VST mosaic around IC 1459 in the g band. The image is in surface brightness levels given in the horizontal colour-bar. The solid contours correspond to the surface brightness levels: 22, 23, 24, 25, 26.4 mag arcsec⁻². The main low-surface-brightness features detected in the galaxy outskirts are marked on the image: dotted lines and dashed lines delimit the tidal tails and shells, respectively. The prominent sharp edges on the west side are also indicated with arrows (see text for details).