Chadar Trek is an unusual expedition of walking on a frozen river. The Zanskar River in Ladakh freezes in winter, enabling walking on the ice sheet in a narrow gorge that is inaccessible in summer.
Here is the announcement on Chadar Expedition for January 2013. The expedition will be lead by Manish Lakhani, a chadar veteran who has been trekking on the ice-shelf of Zanskar River for seven years now. Chadar expert Lobasang, a Ladakhi with over a dozen chadar expeditions to his credit will be the tour guide for the trek.
The expedition is scheduled from January 12th to 29th of 2013. See more details on the expedition, including the full itinerary and pricing at the Chadar Expedition page.
I went on this trek in with Manish in Jan-Feb 2011. Below are some images from my trip. Also see Manish’s account of Chadar Trek 2011.