Ulakhan-Sis Range

Ulakhan-Sis Range
Ulakhan-Sis Range
Улахан-Сис
	Panorama of the range
Highest point
Peak
Elevation	754 m (2,474 ft)
Dimensions
Length	160 km (99 mi)
Geography
	Location in Sakha, Russia
Country	Russia
Federal subject	Sakha Republic
Range coordinates	69°30′N 149°42′E / 69.500°N 149.700°ECoordinates: 69°30′N 149°42′E / 69.500°N 149.700°E
Parent range	East Siberian System
Geology
Age of rock	Devonian
Type of rock	Granite, sandstone, effusive rock

The Ulakhan-Sis Range (Russian: Улахан-Сис; Yakut: Улахан Сис) is a mountain range in the Sakha Republic, Far Eastern Federal District, Russia.^[1]

This range is one of the areas of Yakutia where baydzharakhs are found.^[2] Kigilyakh rock formations are also found on this range, some of them quite impressive.^[3]^[4] is an abandoned settlement that was located in the range area.

Geography[]

The Ulakhan-Sis Range rises in the southeastern limits of the Yana-Indigirka Lowland, northwest and west of the Kolyma Lowland and northeast of the Aby Lowland, along the interfluve of the and rivers in the northwest and and in the southeast.^[5]

The main ridge stretches in a roughly east/west direction from the western end of the smaller Suor Uyata (Суор-Уята) to the east and the headwaters of the Sundrun River to the Indigirka for about 160 kilometers (99 mi).^[5] The highest peak is 754 metres (2,474 ft) high . To the north rises the Kondakov Plateau, a lower and wider extension of the range. In the west, the Polousny Range, a prolongation of the range on the other side of the Indigirka River, stretches further westwards. To the south, at a certain distance, rises the Alazeya Plateau.^[1]

The range has mountains of middle height and smooth slopes with larch forests at the bottom of the valleys.^[6]