Intensity maps of the scanned active region obtained at different wavelength positions indicated by arrows in Fig. 2. Left A): At –30 km s^-1 with respect to the central rest position of the Tr2,3 component of the He triplet. Right B): at +30 km s^-1 with respect to the central rest position of the Tr2,3 component of the He triplet. The different letters refer to the line profiles shown in Fig. 5.