Kozalan Waterfalls Natural Park, Blue Lake, or Mavi Gol is an area with rich tourism potential. It is located in Giresun County, located in the eastern Black Sea region. It is of natural and cultural importance, and includes an impressive group of hot springs, waterfalls, a historic wooden mill, a dense forest, a cave and a walking path in The forest and unique biodiversity, this attractive natural park brings all the hard-to-find beauty together on an area of 482 hectares.