Andaval Stele, a late Hittite inscription, dating back to the 9th century BC, was found at the base of the Byzantine sixth century basilica, confirming its origin as a building from The Late Hittite period.
Sources:
- John David Hawkins, Corpus of Hieroglyphic Luwian Inscriptions: Inscriptions of the Iron Age (Untersuchungen Zur Indogermanischen Sprach- Und Kulturwissenschaft, N.F., ... Indo-European and Semitic Languages Edition), 2000, pp. 914-515
- Winfried Orthmann: Untersuchungen zur späthethitischen Kunst. (= Saarbrücker Beiträge zur Altertumskunde Bd. 8) Habelt, Bonn 1971
- Trevor Bryce, The Routledge Handbook of the Peoples and Places of Ancient Western Asia: The Near East from the Early Bronze Age to the Fall of the Persian Empire, Routledge, 2009, p. 194
- Tayfun Bilgin, Andaval - http://www.hittitemonuments.com/andaval/
- David Ussishkin, "On the Date of the Neo-Hittite Relief from Andaval," Anadolu (Anatolia) 11, 1967, pp. 197-202.