Go on a journey in Kyrgyzstan.

"In 1925, the Board of the Central Asian Meteorological Institute commissioned Lev Konstantinovich Davydov to organize an expedition to the Petrov Glacier. The objectives of this expedition were as follows. It was proposed to initiate systematic observations of the life of the Petrov Glacier and a group of adjacent glaciers with the aim of studying the relationship between changes in these glaciers and the regime of the Naryn River on the one hand, and on the other, with the aim of identifying the influence of meteorological factors on the life of these glaciers."

L.K. Davydov "Petrov Glacier", 1925.

Short trip in Kyrgyzstan.

Karasai (Edelstein) glacier is located at altitude: upper boundary of glacier is at an altitude of 4866 to 4916 meters above sea level, tongue of glacier is located at an altitude of 3798 meters above sea level, is located on southwestern slope of Akshirak ridge in Central Tien-Shan mountain system in Jetyoguz district of Issyk-Kul region. 
The length of the glacier is 11.2 kilometers, the area reaches 19.65 square kilometers, the greatest width in the upper part from west to east, from the top of SNK (Sarytor) to the top of NHTE reaches 7.2 kilometers. In the lower part, the width of the glacier with adjacent glaciers of the slopes, the perimeter of the glacier is 41.03 kilometers. 960 meters below the glacier tongue there is a moraine, flowing lake of the same name at an altitude of 3796 meters above sea level, 1810 meters long, the greatest width of the lake reaches 702 meters, the area of ​​the lake is 0.98 square kilometers.
In the southwestern part, the lake is blocked by a natural moraine dam. Below the lake there are also more than 16 small moraine lakes. From the southeastern part of the lake flows the Karasai River, 57 kilometers long. The Karasai River basin consists of the following rivers: right tributaries - Kyrkoo-Su, Kyrgakkor, Kyrkol, Kundai, Achiktashtor, Tarasu, left tributaries - Egiztor, Ashu-Su, Kentor, Cholkotor, Sarytor.
In the north, the Karsai glacier borders on the upper boundary of the left branch of the Petrov glacier, 11.1 kilometers long. From the eastern slopes of the western spur, 8 large and small glaciers adjoin the right side of the glacier, which can also be distinguished as independent.
The upper boundary of the glaciers of the western spur borders on the glaciers of the western slope of the Akshirak ridge: Akbel, 3.5 kilometers long, Maly Kazan, 1 kilometer long, Bolshoy Kazan, 2 kilometers long, Bordu Yuzhny, 4.5 kilometers long, Bordu Northern, 3.9 kilometers long, Davydov Southern, 3.8 kilometers long, Davydov Northern, 2.8 kilometers long.
From the western slopes of the eastern spur, 9 large and small glaciers adjoin the left side of the glacier, which also tend to be independent. 
Geographic coordinates of Karasai glacier: N41 ° 49'08 E78 ° 14'30

Authority and photos by
Alexander Petrov.