
Kevin Wright / National Parks Service
On the second day of rescue efforts, climbers skirt the edge of the debris field from a June 14, avalanche that may have buried four Japanese climbers on the West Buttress route of Mount McKinley in Alaska in this June 15 photo.

National Park Service
Searchers examine flag belonging to Japanese climbers.
All are from Miyagi Prefecture -- the same area devastated by the 2011 quake and tsunami -- and were descending the mountain when the avalanche hit.
If confirmed, the deaths would be the worst accident on McKinley since 1992, when four Canadian climbers died.
-- Reported by msnbc.com's Miguel Llanos

National Park Service
National Park Rangers search for signs of Japanese climbers.

Kent Miller
The 11,200 foot camp.