丹霞

“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


中国甘粛省張掖市*2の「張掖丹霞国家地質公園」*3