This is not in Tibet, it's in JiuZhaiGuo, a part of the Sichuan province. But in this part there is a lot of tibetan community. And yes they are prayer scarves, everytime the wind flow them, a wish is realized^^
It was the "New China" & the scarves that made me think it was Tibet, but I was right about it being Tibetan
I have a prayer scarf, given to me by His Holiness, on His visit to the UK. My most treasured possession, and I'm not Buddhist.