Go here for more geology pics
Dunes and Yardangs
I got to experience much of China in my first trip there (outside of Hong Kong many years ago). The 8th International Conference on Aeolian Research (ICAR) was held in Lanzhou, central northern China. That gave us an excuse to visit some yardangs, rare wind-eroded features in the far west near the Taklamikan desert, and the 300m high mega-dunes of the Badain Jaran of Inner Mongolia. It was wonderful experiencing the amazing landscapes of China, seeing good friends, and making lots of new ones.