Terelj is a wonderful area to visit and relax. In the area thier is the UB II Hotel and also Ger camps to stay for the day or longer. Activities such as hiking, horse and camel rides are also available.
Terelj, about 80km north-east of Ulaanbaatar, is a deservedly popular destination. At 1600m, the area is cool and the alpine scenery is magnificent, and there are great opportunities for hiking, rock climbing, swimming (in icy water), rafting, horse riding and, for hard-core extreme sports fanatics, skiing in the depths of winter. Most visited is the turtle rock and the dinosaurs park.
Terelj was first developed for tourism in 1964 and 30 years later it became part of the Gorkhi-Terelj National Park. To the north-east, the park joins into the Khan Khentii Strictly Protected Area, comprising over 1.2 million hectares of the Tov, Selenge and Khentii aimags. The Khan Khentii park is almost completely uninhabited by humans, but it is home to endangered species of moose, brown bear and weasel, to name but a few, and to over 250 species of birds. Parts of the tiny section of the Gorkhi-Terelj National Park developed for tourism are a bit touristy: some ger camps have concrete car parks, ugly electricity poles, TV antennae and discos at night; and locals overcharge for goods and services. But you can easily get away from all this if you want.
In later summer, the mosquitoes at Terelj can be appalling - at times, the worst in the country - so make sure you have insect repellent with you.