Left panel: GASS data showing the HI emission at V_LSR = −95.64 km s⁻¹ with white contours. The contour levels are at 3.0 and 6.0 K. The background colour scale is the total gas column density N_H. The yellow dashed ellipse delimits the edges of the bubble as seen in Fig. 2. Right panel: HI emission map at V_LSR = −95.64 km s⁻¹. The white dashed lines represent the slices used to produce the velocity-position plots in Fig. 10.