Zhangye Danxia National Geological Park in Gansu is the best representative of China’s colorful Danxia landform. With a wide     1     (various) of landforms, this enormous park covers     2     area of 510 square kilometres.     3     (extend) along the northern part of Qilian Mountain in west China, it was said to be part of The Great Silk Road. At one time, Marco Polo arrived in China through this area.     4     (former) a provincial park and scenic area, it     5     (become) a national geopark in November 2011.

The site is characterized by amazing landforms, including     6     (drama) natural towers, deep valleys and impressive waterfalls. These landscapes have helped to conserve broad-leaved evergreen forests, and host many flowers and plants, about 400 of     7     are considered to be rare or     8     (threaten).

The most representative spots in the park such as the Seven-color Screen and the Colorful Sunset look like a rainbow hanging in the distance. However, scenes are totally different on the edge of the hills. The colors there turn into yellow and grey like shells in the sun. Scenes are even more breathtaking     9     sunrise and sunset when lights and shadows     10     (cast) on the hills paint this region with unique beauty.