The giant bubble in Cepheus was discovered by Kun et al. (1987) in the IRAS maps. It has an angular diameter of about 9° and connects several well-known star forming regions such as IC1396, S140, NGC7129. All these regions have nearly the same distances of about 800 pc permitting a good distance and linear size estimate for the bubble. Figure 1 shows the surface distribution of IRAS 100 μ optical depths, obtained from the 60 and 100 μ data and smoothed to the resolution of the HI survey. Although the bubble was discovered in the IRAS data base it is well pronounced in the integrated HI map obtained from the observations of Heiles & Habing (1974) and Weaver & Williams (1973). Figure 2 shows the HI line area map.