JIGOKUDANI, JAPAN - FEBRUARY 17: A rear view of Japanese Macaque monkey as it heads to a hot spring at the Jigokudani (Hell's Valley) Monkey Park on Feb 17, 2008 in Jigokudani, Nagano, Japan. This Macaque troop regularly visits the Jigokudani-Onsen springs to escape the cold, behaviour originating from a female Macaque which ventured into the hot springs to retrieve soybeans in 1963.