The Hengduan Mountains Region in northwest Yunnan isc haracterized by its high snow mountains alternating with deep gorges, showing a marvellous geomo rphologicalspectacle.

• 滇西北横断山区，由于地质的强烈作用，形成怒江、澜沦江、金沙江三江相间并流的地貌大奇观，有众多峡谷和高大雪山群，低纬低海拔的冰川。