The narrow channel between B15j and C16 when the two icebergs were close together. There is a sizable chunk of one of the icebergs in the crosshairs, so to speak. The chunk is tilted, making the surface appear darker because it is partly shaded. Later in the season, other people including Marianne and Jonathan revisited the seismometer site near this picture. The collisions between B15j and C16 produced this spectacular collision mound.