Illustration of the region surrounding the largest maximal sphere in our catalogue (W1.0075.000), which has radius of 31 Mpc. The left-hand panel shows this sphere and the other six maximal spheres detected in this void region. The right-hand panel shows, in red, the centres of the overlapping significant spheres that make up the void, other void regions within this area of the survey are shown in orange. The black points in both panels are the unisolated galaxies, while the grey points are the isolated galaxies.