Left panel: spatial distribution of galaxies in the whole field. Pixel positions for galaxies are given. The units on the axes are pixels = 0.2′′. North is up and east is to the left. The structures identified are indicated with the different colors. Black points: all galaxies in the spectroscopic catalog. Red dots: main cluster, “1”. Empty magenta pentagons: “1c”. Green skeletal stars: “1d”. Blue crosses: “1e”. The size of 1 Mpc at z = 0.95 is also shown. The BCG of the main cluster is also indicated with an empty red circle. Lower right panel: redshift histogram of the whole field. The position of the structures identified in the field is also indicated. Upper right panel: redshift histogram of the structures 1 and 1c, which are the structures analyzed in the paper.