Himalayan rivers are not small. During the monsoon or when the snow melts on the northern aspect of the Himalaya, the amount of water crashing down these gorges and valleys is monumental. They were never the highways and byways, supplies were transported via mule trains along treacherous paths, on jouneys taking days if not weeks. Nowadays, thanks to military need and tourist greed, great ribbons of black scar the landscape supplying remote areas with luxuries never dreamt of (or needed!).