The mural behind the tomb monument the entrance to the sacristy dates from the late fifteenth century and picks up on the theme of the Crucifixion of Christ already addressed by the Gero Crucifix in the Chapel of the Cross. This mural; which inspires the beholder to devotion; shows Mary and St John mourning on either side of the cross. unknown who donated the mural who the figure kneeling at the foot of the cross isis also unknown. [crucifixion image was very common] in fifteenth-century 鈥?In the foreground tomb monument ofEngelbertI -von Berg