The abundant water flowing in the Amu Darya comes almost entirely from glaciers in the Pamir Mountains and Tian Shan , which , standing above the surrounding arid plain , collect atmospheric moisture which otherwise would probably escape somewhere else .
The abundant water flowing in the Amu Darya almost entirely comes from glaciers in the Pamir Mountains and Tian Shan , which , standing above the surrounding arid plain , collect atmospheric moisture which otherwise would probably have escaped somewhere else .