Top: RA × Dec projected density map as measured from 3D-KDE with 1Σ in terms of the density contrast. The GSyF systems are represented by white circles with radius scaled to the estimated R_vir. Bottom: RA × Z projection. The filaments detected in this work are overlaid in color. Density is represented following the color scale displayed on the right, where denser regions are redder and less dense zones are bluer.