Yedigöller National Park .... Yedigöller Milli Parkı,

The Yedigöller National Park (Turkish: Yedigöller, "seven lakes") also known as Seven Lakes National Park is located in the northern part of Bolu Province in Turkey. The park is categorized under IUCN II and was established in 1965. The park is best known for the seven lakes formed by landslides and for its profusion of plant life.  

The park is located at an elevation of 900 metres (3,000 ft) in Mengen district in the north of Bolu Province and to the south ofZonguldak in the western Black Sea region.  The park is located between Istanbul and Ankara. Access is from the Yenicaga road, 152 kilometres (94 mi) from the Ankara – Istanbul highway. 

The park also has trekking paths and camps to stay, in the form of tents, caravans, rest houses and bungalows. There are also hot springs in the park, and the ski centers here are well known in Turkey.

Yedigöller Milli Parkı, Batı Karadeniz bölgesinde Bolu ilinin kuzeyinde Zonguldak ilinin güneyinde Düzceilinin doğusunda yer alan Milli Parka Bolu İli Mengen ilçesinden ulaşım mümkündür. Ayrıca Ankara-İstanbulkarayolunun 152inci km'sinden Yeniçağa ve 190 km'sindeki Bolu ilinden kuzeye ayrılan yollarla ulaşılır

Milli Park içinde kampçılık, günübirlik piknik, yürüyüş, fotoğraf çekimi gibi rekreaktif faaliyetler yapılırken konaklama ve yiyecek ihtiyaçları da tesis edilen dinlenme evleri, kır gazinosu ve kantinden karşılanılabilir.