Measuring 134.3 × 237.5 cm, the center panel has as its centerpiece an altar on which the Lamb of God is positioned, standing in a verdant meadow, while the foreground shows a fountain. Five distinct groups of figures surround altar and fountain. In the mid-ground two further groups of figures are seen gathering; the dove of the Holy Spirit is above. The meadow is framed by trees and bushes; with the spires of Jerusalem visible in the background. Dhanens says the panel shows "a magnificent display of unequaled color, a rich panorama of late medieval art and the contemporary world-view." The iconography, suggested by the groupings of the figures, appears to follow the liturgy of All Saints' Day.