纳木错，闻名西藏的三大圣湖之一，犹如一块耀眼的碧玉镶在念青唐古拉山脉以北的羌塘高原上。蒙语称其为“腾格里海”，即“天湖”之意。湖面海拔４７１８ｍ，比号称世界第一高湖的“的的喀喀湖”还高出９０６ｍ。它东西长７０ｋｍ，南北宽３０ｋｍ，是我国仅次于青海湖的第二 Nam Co, one of the three most famous sacred lakes in Tibet, is like a dazzling jasper set on the Qiangtang Plateau to the north of the Nyainqentanglha Range. Mongolian called it “Tengger Sea”, that is, “Tianhu” meaning. The lake is 4718m above sea level, 906m above Lake Titicaca, the world’s highest lake. It has a length of 70km and a width of 30km from north to south. It is the second only to Qinghai Lake in China