15 meters of snow
This road can be found between Nagano and Toyama prefectures in the “Japanese Alps”. The route is known as the Alpen Route and can only be used by cars “sometimes” 
The area is known for its ski resorts and also for the largest dam in Japan: Kurobe dam.
Source: Karapia.livedoor.biz
Comments
kirin
20 February, 2011
Actually the entire route is called the Alpen route, this particular section is called the Yuki-no-Otani Snow Canyon.
http://www.japansugoi.com/wordpress/amazing-tateyama-kurobe-alpine-route-yuki-no-otani-snow-canyon/