Özvatan (formerly Çukur and Siricha (Ancient Greek: Σάριχα or Σιριχά) is a municipality and district of Kayseri Province, Turkey.

It has a harsh climate being too cold in winter and too hot in summer.

The oldest ruins in the district are the Harsa and Zırha Castles, which are located on the side of the river Kızılırmak and are thought to belong to Hittites.

Around 430 BC, Zırha Castle was added to the territory of Rome, so it is possible to come across traces of Roman Civilization in the region.

This geographical article about a location in Kayseri Province, Turkey is a stub.