“China Danxia” http://whc.unesco.org/en/list/1335
“Colourful rock formations in the Zhangye Danxia Landform Geological Park“ http://www.telegraph.co.uk/travel/destinations/asia/china/galleries/Colourful-rock-formations-in-the-Zhangye-Danxia-Landform-Geological-Park/
Nick Visser “Rainbow Mountains In China’s Danxia Landform Geological Park Are Very, Very Real (PHOTOS)” http://www.huffingtonpost.com/2013/07/31/rainbow-mountains-china-danxia-landform_n_3683840.html *1
*1:Japanese vesion: 「中国には「虹色の山脈」がある。いつかこの地に行きたい（画像）」http://www.huffingtonpost.jp/2016/10/01/rainbow-mountains_n_12288492.html
*2:http://www.zhangye.gov.cn/ See eg. http://baike.baidu.com/view/72617.htm
*3:http://www.zydanxia.com/index.html See eg. http://baike.baidu.com/view/3213769.htm
