Today we continue with the 21 scenes from the Apocalypse (see 1100). On the map as shown in post 1100 you can find the following picture at nr 2, on the right site of the door that leads the Chapel of St. Nicolas.
This dark fresco shows us a seven headed dragon, “persecuting the people of God”, with a crowned woman sitting on his back, holding a cup it might be the scene from John 17:3-5): And I saw a woman sitting upon a scarlet coloured beast, full of names of blasphemy, having seven heads and ten horns. And the woman was clothed round about with purple and scarlet, and gilt with gold and precious stones and pearls, having a golden cup in her hand, full of the abomination and filthiness of her fornication.
We see dark rocks and people (with crowns) kneeling down and worshipping.
Here is a detail of the dragon:
That brings us to scene nr 6: 
Seven angels are given golden bowls containing of the wrath of God (John 15:1-8). Two of the angels are missing on the top of picture, but I had little time to do a proper job. This painting is much brighther then the last. Again crowned people apear, but also a beast, spitting 3 frogs: John 16:13: And I saw from the mouth of the dragon and from the mouth of the beast and from the mouth of the false prophet, three unclean spirits like frogs.
Here is a detail of the beast spitting the frogs:
next time more images of the portico (15 scenes to go!), Wim 29/8
This event takes place every year, on Jan 6th, the Feast of the Epiphany, throughout the Orthodox world.
http://en.wikipedia.org/wiki/Epiphany_(holiday)
– see the section on the blessing of the waters.
Diving in Russia:
http://www.telegraph.co.uk/news/picturegalleries/worldnews/7027516/Russian-Orthodox-believers-celebrate-Epiphany-by-taking-a-dip-into-icy-water.html
or:
http://www.gogreece.com/learn/ephiphany.htm
or:
http://suncoastpinellas.tbo.com/content/2010/jan/06/061956/chilly-bayou-added-cross-bear-epiphany-divers/
hope these help !
Theophany is also a major feast in Ethiopia (where it is called “Timkat”). http://news.bbc.co.uk/2/shared/spl/hi/pop_ups/07/in_pictures_festival_of_timkat/html/7.stm offers some pictures
That is a visiting bishop (the abbot is a priest.) It is hard to see but presumably the man in the water is handing back to the bishop the cross that he just threw into the water. The bishop is not helping the man out of the water (the laymen would do that if he actually needed help but look at the first picture to see he could easily walk out of the water.)