25th - 26th February, 2015 | Oushu City, Iwate Pref.
Festival at Kokusekiji Temple in Oshu, Iwate Prefecture features 110 loincloth-clad men taking a bath in frigid river near the temple and climaxes with men scrambling for a hemp sack thrown into the crowd.
The festival drew some attention in 2008 when Japan's railway company refused to display a poster of the festival, saying it would cause offense.
# For the details, please access to the followings;
[Seasonable Traditions & Japanese Culture] http://www.goldenjipangu.com/150216sominsai.html
[Official Homepage of the Event] http://kokusekiji.e-tera.jp/sominsai.html