There are Tibetans migrating there every day, and they will definitely not encounter the situation where the bones are left alone. However, it is the custom there to put the clothes or supplies of the deceased on the road to pray for the deceased. I don’t know if the questioner has seen similar photos.
Although you are not afraid of danger, you still have to act according to your ability. In winter, the temperature is lower and it is easier to get altitude sickness. If there is wind and snow, it will increase your physical exertion and the difficulty of climbing. If you plan to take a day off in between, you need to prepare more warm clothes and increase the weight.
There is no danger of getting lost on the whole road, but the last time I went there in July, there was snow on it, probably no calves, and it was still difficult no matter whether it was going up or down the mountain. My experience is not to try new roads, just follow the footsteps of those who have gone before you. Go ahead and be careful not to slip. There is a section of the way down the mountain where you will pass a frozen lake, so be careful not to miss the mark. I don’t know if these experiences are still effective when there is heavy snowfall in winter.
However, you have to consider the factors such as low temperature, violent storms and snow, as well as the reduction in the number of people traveling to the mountain. Therefore, it is highly recommended not to go there in winter. Not only are there many uncontrollable factors during the mountaineering, but in case something happens, Taqin will drive to Shiquan River and The road to Lhasa for the meeting is not guaranteed to be smooth.

Attached are the photos I took last time I went up the mountain to get a feel for the snowy road conditions~ It wasn’t very snowy when I went there, but if the mountain is actually closed, it might be even more serious.

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