Moraine

Ascent to the peak of **Choybalsan** (4191 m) from the west, category 1B difficulty level, via a glacier and a rocky scree couloir, duration 6 hours.

Peak Choibolsan (4191 m) Western ascent — Cat. 1B (Fig. 6) Peak Choibolsan, resembling a rock tower, is located in the watershed ridge system, in the upper reaches of the Ozernaya River valley. The northern side is covered in ice, with rock ridges approaching from three sides, connecting it to: the Ozernaya peak to the east, the unnamed "4200 m" peak to the south, Almaty Alagir to the west. The northern side of the massif drops off with a nearly sheer wall, whose steepness decreases somewhat at the base. Fig. 6

Ascent to the summit of Nauka (3988 m) from the east along the snowy ridge, category 1B complexity, 6-7 hours.

Nauka (3988 m) Ascending the summit from the east — Category 1B difficulty From the summit of Choybalsan, a ridge with minor glaciation extends southward. It is crowned by a peak (3988 m) later named Nauka. From the bivouac at Ozernoye Saddle, turn right and proceed to the col between Choybalsan and Nauka peaks. Upon reaching the col, partially via scree and snow, turn south and continue the ascent along the snowy ridge with a moderate slope. The ascent takes 6–7 hours. The descent follows the ascent route. The first ascent was made in June 1955 by Almaty climbers A. Maryashev and B. Studenin. Recommendations for Climbers The number of participants is not limited. Initial bivouac at Ozernoye Saddle. Departure from the bivouac at 7:00 AM. Equipment for a 4-person team: 2 × 30 m dynamic rope.