3D position velocity cut of [C II] emission of the Diamond Ring. The angular resolution is 30″, the velocity resolution is 2 km s⁻¹, and the colour scale ranges from 5 to 20 K km s⁻¹. No distinct ‘bubble’ feature is observed; the emission is concentrated around the bulk velocity of −2 km s⁻¹. The [C II] emission associated with Cl 13 at 7 km s⁻¹ is clearly discernible. Additionally, more diffuse emission is detected at 15 km s⁻¹, described as high-velocity gas in Schneider et al. (2023). An interactive version is accessible online.