3D view of the Perseus-Taurus region in 3D dust. Top panels: shown are iso-surfaces at n = 5 cm⁻³ (gray) and n = 25 cm⁻³ (cyan) levels. The colored sphere is the sphere model of the Per-Tau shell (Table 1). Bottom panels: the Tau Ring. A plane cutting through the Tau Ring (left), the basis vectors spanning the plane (B1) are also shown. On the right we show a density slice through the ﹩{\hat{e}}_{1}-{\hat{e}}_{2}﹩ plane. The modeled ellipse with semimajor axis a = 39 pc and and semiminor axis b = 26 pc is shown.