This is the end of the Paracclesion, where the frescoes are. This is the "Anastasis" (Resurrection), in particular a scene known in English as the Harrowing (smashing up, breaking open) of Hell. Christ has broken down the gates of Hell which lie beneath his feet. Satan, bound, lies before him. With his right hand he pulls Adam out of his tomb, behind Adam St. John the Baptist, Salomon and other righteous kings. With his left hand he pulls Eve out of her tomb; standing in it is Abel and behind him more righteous.
Under the picture some saints, of some of them the pictures are elsewhere in this series. I was informed that the three on the right are the so-called Three Hierarchs, that is, St. Basil the Great, St. Gregory the Theologian and St. John Chrysostom.
A viewer contributed: This icon of Resurrection is calld " Descend to the hades" is depicted from the events described in the Apocrypha Gospels. It has became in the Eastern orthodox Church the banner of Resurrection and the victory over Death of jesus Christ. Hades= Kingdom of death, which was put to an end with Christs' descend and freeing of all righteous souls from Adam and Eve till the rubber who was crucified on the Cross and repented and asked that Christ to remember him in His kingdom, according the Gospel and Apocrypha Gospel writings. This is the original and the earliest Descent to the Hades depicted in the Christian History of iconography and art.
Adding: There are three more hierarchs the 1st on the right is St. Cyrillus of Alexandria and the two on the left I do not see the picture clear.