Hıdırnebi, Çal Cave, Sera Lake Tour
Hıdırnebi Plateau, Çal Cave and Sera Lake. Çalöy Cave, located 30 km away from Akçaabat district of Trabzon province, is not only the largest cave in Turkey, but also an important tourism region with its millions of years old stalactites and stalagmites, water and waterfalls.