"Kaya" means rocky in Turkish. It has taken Kaya-başı name in Turkish due to the rocky terrain.
Population
It has about 450 households of mübadil the in old village centre. It has taken over migration all over Turkey because of the established industrial site in the district. According to the administrative addition with new city of Kayaşehir it had a population of 60.191 in 2015 census.
The :tr:Azatlı Baruthanesi was built in 1795 to serve the purpose of producing gunpowder for the Ottoman Army. Due to necessity of water for producing gunpowder Şamlar Bendi was built in Mahmut II's reign in 1826-1828. It was operated byDadian family who was an Ottoman Armenian. Privileges were granted by Sultan to Armenian workforce in the region to produce gunpowder. On account of that privilege the region was known as Azatlı. The Baruthane was destroyed during the Russo-Turkish War by Russian Army and closed.
Şamlar village
The oldest building in the village is a mosque dated 1839 and school is dated 1903. A part of village territory was confiscated during the construction of Sazlıdere Dam.
Because of Treaty of Lausanne village was included the Greco-Turkish population exchange of 1923. Muslim inhabitants left from Kovitsa in Drama by train from Drama train station. Muslim inhabitants firstly settled in Yeşilköy in Istanbul but it is not suitable for animal husbandry especially goat raising. Then they settled in Kayabaşı and :tr:Mahmutşevketpaşa, Beykoz|Mahmutşevketpaşa in Istanbul, and also others Halitpaşa in Manisa, :tr:Kadıköy, Keşan|Kadıköy in Keşan, Yağcılar in Akhisar and some villages of Orhangazi, and İznik in Bursa, hence Orthodox Christian inhabitants in Kayabaşı most of them went to Kayalar'' in Greece from Turkey. Orthodox inhabitants of Kayabaşı marked living by vineyard and farming in particular. Kayabaşı remains water wells and tile drain ruins and part of wall ruins of church from Orthodox inhabitants. There are remained houses which was built by Orthodox inhibitans and there are still some old houses which was built by first Muslim inhabitants. There were two church in Kayabaşı during the population exchange. Current mosque was built from a different palace of church with demolished church materials in 1950s. There was a school which was built in 1930s rebuilt with current school building in 2000s. Nowadays, livestock and farming is gradually decreasing because of expropriation to establish new city cite. Some of villagers migrated abord because of changing business facilities.