Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Goygol is a rayon (district) in northwestern Azerbaijan. Formerly known as Khanlar, the region was renamed "Goygol" after Lake Goygol, the famous blue lake, by the decision of the Parliament of Azerbaijan on April 25, 2008. The administrative center of the rayon is the city of Goygol. The city of Goygol was founded as the German settlement of Helenendorf in 1819 and was renamed as Khanlar (Xanlar) in 1938.