The column density image of Vela C including the filamentary structure detected by DisPerSE, with cyan, blue and magenta representing structures detected at A_V  >  25, 50 and 100 mag, respectively. Ridges in this instance appear magenta in colour. Note that this figure is the same as presented in Fig. 3 with different colours only chosen here to highlight the crests. Bottom: zooms to South-Nest (left) and Centre-Ridge (right), the two most contrasting regions with respect to filamentary structure.