Total distance: 15km.
Not for beginers.
Period: the end of January to the middle of Februrary.
Unryu Valley is located on the eastern side of Mt. Nyohou. It has beautiful giant icicles and frozen waterfalls. The scenery of the Unryu Valley and the mid way is a excellent winter wonderland.
Highly recommend to join a tour and never climb alone.
You need a complete wear for winter clibming, snow spike and helmet. Never go under the icicle. It is very dangerous.