The road from Xi'an to Chongqing

the road wasn't fully paved and many places have rock exposure with ichno and trace fossils. I enjoyed this in total 800km road a lot. but you have to try it in spring. too hot in summer. the area is mountainous and the altitude can go as high as 2500 above the sea level. soon the extension of the new highway will bypass all these beauties. This 90km mountain road took me almost 3 hours to pass.