The Yeşilırmak (Turkish: Yeşilırmak, lit. 'green river'), known as the Iris in antiquity (Ancient Greek: Ἶρις), is a river in northern Turkey. From its source northeast of Sivas, it flows past Tokat and Amasya, crosses the Pontic Mountains and the Çarşamba Plain, reaching the Black Sea east of Samsun after 418 km (260 mi).
Its tributaries include the Çekerek (ancient Scylax) and the Kelkit (ancient Lycus).
Amasya Province (Turkish: Amasya ili) is a province of Turkey, situated on the Yeşil River in the Black Sea Region to the north of the country. Its area is 5,628 km, and its population is 338,267 (2022).
The provincial capital is Amasya, the antique Amaseia mentioned in documents from the era of Alexander the Great and the birthplace of the geographer and historian Strabo. In Ottoman times Amasya was well known for its madrassas, especially as a centre for the Khalwati Sufi order. The district is also the birthplace of the Ottoman leader Kara Mustafa Pasha.
View the full Wikipedia page for Amasya Province