Church 1 was a three-aisled basilica with an atrium and annexes. Dates to the fifth - sixth century (based on the pottery, fragments of architectural sculpture and mosaic ).
See:
- Yelda Olcay Uçkan, Gökçen K. Öztaşkın, Excavations at Olympos 2014, ANMED News Bulletin on Archaeology from Mediterranean Anatolia 13, 2015, pp. 87-90
-
öztaşkın, gökçen kurtuluş. “Early Byzantine Churches in Olympos.” Journal of Archaeology & Art 161, 2019. https://www.academia.edu/43441453/Early_Byzantine_Churches_in_Olympos