Geological map of 67P observed from the top of the head lobe and nomenclature of the geological regions (modified from Fig. 2 in El-Maarry et al. 2015), and the possible source regions, red circles, of the curved jet. The possible source region is at about 6 degrees latitude in the northern hemisphere. The sub-solar point at the time of the present observation (31 May 2015) is 9 degrees latitude in the southern hemisphere and moves toward higher latitude until the beginning of September, 2015. The right panel is the NAC image obtained on September 19.5, 2014, with a resolution of about 0.53 m/px.