It rises, as the Boro or Telgona, in Dar Fertit, and receives from the south and south-west the Raga, Sopo, Chel and Bongo.
By the Boro-khoro Mountains, and on the S.
Long, and is cultivated in its lower parts, while the Boro-khoro Mountains are snow-clad in their eastern portion, and fall with very steep slopes to the valley.
There are three harvests in the year - the boro, or spring rice; dus, or autumn rice; and dman, or winter rice.
Boro, or spring rice, is cultivated on low marshy land, being sown in a nursery in October, transplanted a month later, and harvested in March and April.
Rice is the great crop of the district, and three harvests are obtained annually - the aman, or winter rice; aus, or autumn crop; and boro, or spring rice.
2390 ft.) the principal constituent ranges are the Bogdo-ola, continued west and north-west in the Iren-khabirga, the Talki Mountains and the Boro-khoro, flanking in succession the great depression of Dzungaria on the south.
West of the Urumchi gap, the Bogdo-ola is continued in the double range of the Iren-khabirga Mountains (11,500 ft.), which curve to the north-west and finally, under the name of the Talki Mountains, merge into the Boro-khoro range.
The Boro-khoro Mountains, with an average elevation of at least 11,500 ft., have all the characteristics of a border-ridge.
The passes in the Boro-khoro lie at lower altitudes than is usual in the Tian-shan ranges, namely at7000-7415ft.