Schematic overview of the Bar as inferred from JWST and other observations (e.g. Jansen et al. 1995; Wen & O’dell 1995; O’Dell 2001; Pellegrini et al. 2009). It shows the main features discussed in this paper and Habart et al. (2024, based on NIRCam and MIRI imaging). Given the complexity of the PDR surface, parameters derived in this paper are specific for the NIRSpec mosaic. We note that for clarity, the dimensions perpendicular to the bar are not to scale; the true spatial scales are explicitly given in the annotations. In addition, the sketch does not include foreground material, that includes a layer of ionised gas O’Dell et al. (2020) and, closer to the observer, layers that are grouped together under the designation as the Veil (e.g. Rubin et al. 2011; Boersma et al. 2012; van der Werf et al. 2013; Pabst et al. 2019, 2020).