1.3 GHz emission (colour scale) image obtained with MeerKat (Goedhart et al. 2024) towards G035.39. The yellow contours corresponds to 0.1 g cm⁻² in the mass surface density map of Kainulainen & Tan (2013) and highlights the shape and location of the IRDC. The white (44–45.5 km s⁻¹) and orange (45.5−46.5 km s⁻¹) shadows correspond to the integrated intensity maps of the ¹³ CO(1−0) (left panel) and C¹⁸ O(1−0) emission (right panel) obtained with the Green Bank Telescope 100 m antenna. The orange shadows correspond to integrated emission larger than 3σ for both the ¹³ CO(σ=0.4 K km s⁻¹) and C¹⁸ O emission (σ=0.15 km s⁻¹). The white shadows correspond to integrated emission larger than 6σ for the ¹³ CO emission (σ=0.5 K km s⁻¹) and 3σ for the C¹⁸ O emission (σ=0.17 km s⁻¹).