Overview of observed substructure in the circumstellar envelope of AFGL2591. The “outer” and “inner” envelopes, as well as the four-arm structure of N₂H⁺, the warm CH₃OH spots, and the CH₃OH plume are described in this work. The directions of the approaching (blue) and receding (red) outflows are indicated. The yellow star marks the position of the central heating source (infrared source from Van der Tak et al. 1999). VLA1 and VLA2 are radio continuum sources detected by Trinidad et al. (2003). The near-IR loops from Preibisch et al. (2003) are indicated in dashed yellow. For reference, the fields of view of JCMT/HARP-B and the interferometric maps from VLA and OVRO are indicated.