Before studying in depth how ice and snow attached to the Zero combat planes; from the 16th year to winter in the 17th yaer of Showa (1941-1942), preliminary experiments were undertaken under a ridge near the top of Niseko-Annupuri.
  After that, from the then House of National Railway at the middle of the ridge to mountain peak a small wooden laboratory was built and a system to observe anytime was begun.
  Professor of Hokkaido University, Ukichiro Nakaya and his fellows were asked by the navy to work on experiments of natural ice and snow attaching to combat planes at this place of iron cold.
  There their mission was to draw in natural clouds into a wind tunnel at high speeds. In addition, the researchers lived at the site and made a point of thinking in as good surroundings as possible.
  The construction of the laboratory started in spring of the 18th year of Showa (1943) and finished that autumn.
  The total cost of construction was about 5hundred thousand yen, and Ushizo Yoshimura in Kaributo Village (the present Niseko Town) contracted the construction.
  Most of the people in Kutchan, Niseko and Rankoshi were involved with carrying the materials, the combat plane and food.
  This right wing of a Zero combat plane found on the side of Niseko-Annupuri is truly a piece of the past telling us the history of World War II.