Target stars used to build the 3D extinction density map in the Taurus area. The locations of the stars are shown as dots colored according to their extinction (color scale to the right of the figure). White areas correspond to high-opacity central regions within the main dust clouds (extinctions above ≃4 to 5 mag) and mark the subsequent lack of targets with precise distances and photometry due to their faintness. The reconstructed dust distribution will reproduce the clouds but underestimate the corresponding high opacity of the cores.