Terelj National Park is one of the most visited and interesting national parks of Mongolia. It is located in the valley of the Terelj River (Terelj Gol), approximately 66 km from the Ulaanbaatar city center. The National Park is by its natural beauty, forested alpine mountains and interesting rock formations such as Turtle Rock. During the summer there are great opportunities for hiking, horseback riding, rock climbing, flower and bird watching.