Learnt today that you need to make an appointment to get petrol here, very civilized, however we didn't have a booking...eventually got on the road with today being predominantly highway roads. We did 3 mountain passes with the highest being 5200m. A few weird sensations at that altitude and an on again off again headache all day. Passed by a huge glacier but then back to barren lands. Spectacular but often very stark scenery. Saw yak, ate yak in many ways today. I think there will be a lot more yak in the next few days. The roads here feel fat more dangerous than Nepal, far more aggression and higher speeds. Again, need to be very careful. Staying in a very regal hotel here in Gyangtse. Small town, big hotel.