Dörtdivan
Dörtdivan is a town and a district in the Bolu Province in the Black Sea region of Turkey. It covers an area of 284 km², and the population is 9,528 of which 3,300 live in the town of Dörtdivan. The mayor is Sefer Akman. Dörtdivan is a small town deep in the countryside. The area has been occupied for a long time.