Sülükgölü Monastery Ruins, also known the Monastery of Saints Constantine and Helena, Polemonion Octagone, and Fatsa Church. It was arected as an octagonal church in the Early Byzantine period.
The floor mosaic unearthed in the Church of Saints Constantine and Helena Monastery can be dated to the 5th-6th centuries when its style and form are taken into account.
See:
- Seçkin Evcim, Fatsa-Polemonion Octagone (Monastery of Saints Constantine and Helena Church), History of Fatsa and Its Region II, 2022.