As recorded in the accompanying dedicatory inscription, the frescoes in the outer nave were executed in 1767, with a grant from the Archimandrite Leontios and the Prior Parthenios of the Peloponnese. During the decoration of the space, the scene depicting the Assembly of the 12 Apostles, a work of Damaskinos (1716) above the central west entrance of the entrance nave, was kept intact. The entire space has thematic independence since it is exclusively dedicated to the Apocalypse, a cycle which, from the 16th century on, was considered to be a necessary part of the iconographic programmes in the cathedrals of Mt Athos, and was mainly located in the outer naves, as is the case in the Karakallou Monastery. The cycle consists of 14 scenes which refer to specific chapters in the Apocalypse, and are conceptually combined with scenes of Christ and the Virgin Mary on the three blind domes which cover the space. Individual images of the Hierarchs and Holy Monks appear on the narrow surfaces of the imposts and the interior ring of the arch which supports the dome.
