One of the most interesting geological sites in Turkey is in the town of Pamukkale, the "cotton castle" of terraced pools caused by cascading calcium rich mineral springs. One of the important cities of the Byzantine period is the city of Hierapolis at Pamukkale. The nave of the basilica found here has been divided by columns and this structure was most likely a cathedral. It is believed that the side naves were roofed by cradle vaults. The middle nave was made up of three sections, all covered with domes. This city had a setond basilica as well. This basilica stood outside the city walls and strongly resembles the Roman Maxentius Basilica with its three naves. Excavations carried out at the Necropol by an Italian team have unearthed the remains of an octangular structure having a diameter of twenty meters and covering a 60-62 square meter area. This building was built at the end of the 4th or the beginning of the 5th century AD and is accepted to be the Cathedral of St.Philip the Martyr. Please visit my website http://www.susan.com.au , Kind regards, Susan Segal