EVERY morning, Sundarlal Bahuguna clambers down the steep path from his tinshed kuti in Tehri to the huge rocks that keep the Bhagirathi in check. There he dips his emaciated body in the ritual bath that he claims gives him strength, together with the honey and bael juice on which he has survived since April 13. Springing from Gomukh above Gangotri, the sacred river passes through a deep cleft in the mountains nearby before winding through the lower Himalayan valleys to meet the Alaknanda at Devprayag where it becomes the Ganga.