Images acquired at 8:05 UT by STEREO/COR1-B (left) and STEREO/COR1-A (middle), and at 9:34 UT by LASCO/C2 (right), showing the huge amount of chromospheric plasma ejected during the solar eruption of June 7, 2011. In particular, in the C2 frame, two out of the three blobs studied in this work are sketched at a position angle of about 290 degrees. The white circle outlines the limb of the solar disc.