Full-band 25″ × 25″ images of the individually undetected, spectroscopically confirmed members of the protocluster. The R = 2″ red circles are centered at the ALMA positions. Green contours mark the continuum emission at 2 mm of the sources in the core of the structure, as in Fig. 1. Sources in the outskirts of the protoclusters are marked with CO(4-3) contours (3σ, 5σ, and 9σ), since most of them are not associated with continuum emission (Ivison et al. 2020). In the field of source D, a second line emitter (≈3″ from the primary source; Δv ≈ 1700 km s⁻¹) was found and discussed by Ivison et al. (2020). It is not clear if this is another protocluster member, or if it is part of source D (e.g., an outflowing component).