Overview of the DR20 region. Top panel: Radio continuum emission from the GLOSTAR survey at 5.8 GHz with an angular resolution of 19” (corresponding to 0.13pc) is shown on the color scale (Brunthaler et al. 2021). The turquoise contours present the HCO+(1 – 0) data obtained with the IRAM 30 m telescope, integrated between −7 and 3kms⁻¹. Contour levels start at 4σ = 3.4 K kms⁻¹ and continue in 4σ steps. Bottom panel: Dust temperature map derived from the Herschel far-infrared continuum data by Marsh et al. (2017) is show on the color scale. In both panels, the black contours show the H₂ column density map derived by Marsh et al. (2017) at contour levels between 10²² and 5 × 10²² cm⁻² (step 1 × 10²²). A linear scale-bar is shown at the left. The six main regions A to F are marked, and a triangle shows the position of the class II CH₃OH maser associated with B that has been determined by Ortiz-León et al. (2021).