The Tavan Bogd (Five saints) is a mountain massif in Mongolia, near the triple border with China and Russia. Its highest peak, the Khuiten Peak (formerly also known as Nairmadal Peak) is the highest point of Mongolia at 4374 meters above sea level. The Tavan Bogd massif is located mostly within the Bayan-Olgii Province of Mongolia; its northern slopes are in Russia's Altai Republic, and western, in China's Burqin County. According to satellite measurements, the total area of the glaciation in the Tavan Bogd massif area amounted to 204 km2 in 2009. The glaciates area was 213 km2 in 1989; in other words, the glaciers lost 4.2% of their area over the 20 years.[9] Out of the countries that share the massif, the largest glaciated area is in Mongolia; it includes the Potanin Glacier (Mongolia's longest) and the Alexandra Glacier. Special protected areas have been designated in all three nations sharing the Tavan Bogd. The Mongolian part of the Tavan Bogd massif is within the Altai Tavan Bogd National Park. The park covers 6,362 km². It includes the lakes Khoton, Khurgan, and Dayan. The protected area offers a home for many species of alpine animal, such as the Argali sheep, Ibex, Red deer, Beech marten, Moose, Snow cock, and Golden eagle.


Ulaagchnii Khar lake is located in the northeast of Erdenemandal sum, Zavkhan province. Ulaagchnii Khar Nuur lake is considered as one of the oldest lakes in the world, surrounded by golden sand dunes and snow caped Mt. Otgon Tenger. The lake has been protected as Strictly Protected Area since 2010 and one of the most unique nature scenery and fresh water Lake of Mongolia. The lake is 23.9m long and 3.5m wide in average. Depth of the lake is 47m in the west 23-30m in the east and the deepest point is 57m near the Gatsaa. There are 2 big and small island called “Small and Big Avgash” in the middle of the lake. Great Avgash is quite sandy and suitable place for the roedeer for their rebirth in springs, they habitat in the mountain in the autumn.clarity On the bottom of the lake, there are sand and mud and gravel, and some water plants occur on the shallow parts of the lake. The clarity of the lake is 8m and colors are seen as green and blue emerald. Some migratory birds such as Whooper swan, Greylag, duck and others come to the lake in summers and other mammals such as deer, roe deer, fox, wolf, corsac fox cat, and marmot are seen near the lake. Along the shoreline of the lake, there are many eye-catching places.