Background color map composites of Spitzer 3.6 and 5.8 μm and Herschel 70 μm images. The overlaid white contours show the high-resolution H₂ column density map obtained from Sect. 4.1 with levels of 3.0, 5.0, 8.0, 12.6, and 20.0 × 10²² cm⁻². The blue, orange, and red boxes outline the young, intermediate, and evolved parts, respectively. Massive clumps embedded in each part are shown with color ellipses. The yellow contours show MeerKAT 1.28 GHz continuum emission at levels of 100, 180, and 260 mJy beam⁻¹ (8″). The orange cross shows the G316.763–0.011 maser spot for OH and H₂O, while the red cross shows the G316.812–0.057 maser spot for OH, CH₃OH, and H₂O.