It is confined by Ambelakia peaks from the east and Samari peaks from the west. It is the most prominent gorge of Psiloritis and central Crete and was named after the Byzantine chapel located at its southern entrance. It crosses the impressive southern part of Psiloritis from north to south and connects Rouvas forest in the north with Koutsoulis river valley in the south, in the region of Zaros.
The gorge has a total length of 5 km. It starts north to Agios Ioannis Chapel - where a recreation area has been created - and ends at the monastery of Agios Nikolaos in the south. It can be passed in 4 hours.