The Luwian inscription on basalt block is from the time of Katuwa and it was probably a part of a greater monument. It was found at the bottom of the stairways. Dated to the 10-9th century BCE. Anatolian Civilizations Museum, Ankara. Inscription starts as:
"I am Katuwa, the ruler, beloved of the gods, lord of Karkami, son of Suhi... I drove in the lands with gods Tarhunda, Karhuha and Kubaba marching in front of me, where my parents and parents of my parents have never marched."