Yadan Geological Park was the terminus of the western route from Dunhuang.
It was not far from Yumen Pass now.
The park closed at 5:00 PM.
By this time, tourists could no longer enter. However, the park was situated in the midst of the Great Desert, in the Gobi terrain—there was always a way to find a path inside.
Because most of the Gobi area far from the main roads was an ecological preservation zone protected by barbed wire fences, one first needed to find a gap and then plan a suitable route.
