Between Ulaangom and Olgii we took a short cut through the mountains and past two amazing lakes. It was only a short cut in distance not time. The track is known as the jeep track and in parts is incredibly steep (unrideable), incredibly rocky (unrideable) and incredibly sandy (unrideable).
After one 20km section riding downhill into the wind we reached a wide valley that was just made of stones. You can see my bike at the bottom left and Isabelle in the middle at the top in the distance.
This is what she looked like through my 400mm zoom lens: