Lighting the Ice River, BBC

We followed a team of engineers as they undertook an epic nine day trek up the frozen Zanskar River in the Himalayan region of Ladakh. Their mission was to install a solar micro-grid in one of the most remote villages in Ladakh. With daytime temperatures of -15c, dropping to -30c at night, it was the most arduous story any of us had ever worked on.

Reporter : Justin Rowlatt

Camera : Sanjay Ganguly