Winter Trek along the Zanskar River to Leh, Ladakh. An Indo-British party co-led by Indian Mandip Singh Soin and Briton John Barry was flown to Padum in Zanskar on February 6 to begin their 120-kilometer trek down the frozen Zanskar River to near Leh. After the successful trek, they attempted a winter ski ascent of Stok Kangri, but bad snow conditions turned them back.