Imaging of the SPT0311-58 system. Left panel: MIRI F1000W image of SPT0311-58 system after removal of lensing galaxy. Cyan circles mark the position of the individual F1000W clumps, while white circles shows the MRS apertures used for the extraction of the Paα spectra (see Sect. 3.3). Right panel: RGB image where red, green, and blue colours show the ALMA [C II]158 μm, MIRIM F1000W, and WPFC3 F160W lens-subtracted images representing the [C II], rest-frame 1.25 μm, and rest-frame 200 nm continuum, respectively (see Sect. 2).