In course of the excavations and surveys carried out in recent years at the village of Basara in Eskisehir province, ancient quarries exploited in the Roman Imperial period have been discovered. Four sites with open-air quarries have been observed where extraction traces can still be seen on metamorphic rock in the vicinity of the ancient settlement. Grey-colored marble was used in the construction of two Byzantine churches unearthed at the excavations and for the grave steles found by us. That the votive stele, discovered at the excavations and providing the name for the settlement Atyie / Atyia, had been dedicated by stonecutters (Lambda alpha tau upsilon pi omicron iota) provides epigraphic support for the existence of the surrounding quarries. The excavations carried out in Han, not far from Basara (c. 4.5 km), and the surveys conducted in the region present reliable evidence that in the second-third centuries AD the main production of the workshop or workshops utilizing marble extracted from the quarries was doorstone grave steles.