View of colourful rock formations at the Zhangye Danxia Landform Geological Park in Gansu Province, China. The Zhangye Danxia Landform Geological Park is from Zhangye city. The park spans more than 400 square kilometers in Gansu. The unusual .
"Morning Glory Rainbow Pool" Yellowstone National Park, Montana The Grand Prismatic Spring in Yellowstone National Park is the largest hot spring in the United States, and the third largest in the world