TSUNAN, Japan, Jan. 7 - After clambering out a second-story window on Saturday, Kimie Kuwahara, 80, stood atop the 10-foot-high wall of snow surrounding her house. She surveyed this region called the snow country - the starkly white mountain range that spread out in the distance behind her, the record snowfall that had blanketed all but the triangle-shaped roofs in her neighborhood. Pushing a plowlike shovel with both hands, Ms. Kuwahara was busy clearing the fresh powder to a recessed pile several feet away under which, she swore, lay a pond with carp. Her husband, Naoji, also 80, had climbed...