Position-velocity diagram for Hα in the neighborhood of Trumpler 14. Circle size is proportional to line intensity. Color codes as in Fig. 4. The distance origin is taken at the Trumpler 14 position indicated with the large black circle in the upper right of Fig. 23. Positive distances are towards the SW; the dark lane lies at position ~ + 3 arcmin. The direction of the observer is towards the bottom at negative RVs.