We were over 3800 meters high, walking a rugged mountain trail. The weather was cold and misty with a bit of rain in the air. But the pilgrims, some in their shorts & t-shirts, walking barefoot or just wearing chappals were undeterred by the terrain or the climate. They breezed through it all and focussing only on getting to Gaumukh ('Gau' - cow & 'Mukh - face), the terminus of the Gangotri Glacier and the source of the Bhagirathi river. One of the main tributaries of the mighty Ganges.