"Holmenkollbakken is a large ski jumping hill located at Holmenkollen in Oslo, Norway. It has a hill size of HS134, a construction point of K-120, and a capacity for 70,000 spectators. Holmenkollen has hosted the Holmenkollen Ski Festival since 1892, which since 1980 have been part of the FIS Ski Jumping World Cup and 1983 the FIS Nordic Combined World Cup. It has also hosted the 1952 Winter Olympics and the FIS Nordic World Ski Championships in 1930, 1966, 1982 and 2011.
The hill has been rebuilt 19 times; important upgrades include a stone take-off in 1910, an in-run superstructure in 1914, and a new superstructure in 1928. During the Second World War, the venue was used as a military installation, but upgraded in the late 1940s. Further expansions were made ahead of the 1966 and 1982 World Championships, as well as in 1991. Between 2008 and 2010, the entire structure was demolished and rebuilt. As of 8 February 2011, the hill record is unofficially held by Anders Jacobsen at 142.5 meters. The official hill record was set at 5 March 2011 by Andreas Kofler at 141 meters. The hill is part of Holmenkollen National Arena, which in addition to cross-country and biathlon venues has the normal hill Midtstubakken.
Facilities
The hill is part of Holmenkollen National Arena, which also consists of a combined cross-country skiing and biathlon stadium, the normal hill Midtstubakken. Along with Granåsen in Trondheim and Lysgårdsbakken in Lillehammer, Holmenkollen is one of three normal and large hill national arenas for ski jumping and Nordic skiing. The hill is the most popular tourist attraction in Norway, and has roughly one million visitors each year. Holmenkollbakken is co-located with Holmenkollen Ski Museum, which presents the history of skiing. It has a simulator which allows the public to visualize a ski jump in the hill. The hill records is 139.5 meters, set by Anders Jacobsen in 2011, while the women's record is 131.0 meters, set by Anette Sagen in 2006.
After the 1992 upgrades, the Olympic hill had a K-spot of 110 meters. The top of the in-run was 417 meters (1,368 ft) above mean sea level. The tower was 42 meters (138 ft) tall; the top of the in-run was located behind the tower and was 60 meters (200 ft) above the ground. The in-run was 94 meters (308 ft) long. The landing slope was 37 degrees at the steepest and 115 meters long. The vertical height difference between the top of the in-run and the off-run was 121 meters (397 ft).
The new hill has a hill size of 134 meteres and K-spot of 120 meteres. The steepest part of the landings slope is 35.7 degrees, which is 105.6 meters (346 ft) from the take-off. The angle at the hill size point is 30.8 degrees, while the width of the landing slope is 25.2 meters (83 ft). The in-run, built of steel, is 96.95 meters (318.1 ft) long, which is 36 degrees at the steepest. The take-off is 3.0 meters (9.8 ft) tall. The height distance from take-off to the K-point is 59.1 meters (194 ft). The grandstands are made of steel and concrete, and include VIP facilities. It is the only hill in the world with a permanent wind screen built as part of the designed construction, and the only steel jump in the world. The hill is 375 meters (1,230 ft) above mean sea level. The venue is owned by Oslo Municipality and operated by the Association for the Promotion of Skiing.
Transport is based on that no spectators will use private cars to the venue. Instead, all spectators must use the Holmenkollen Line of the Oslo Metro. Holmenkollen Station is located within walking distance of the large hill and cross-country stadium. Holmenkollen Station is the only one the line with platforms long enough for six cars, which allows a capacity of 9,000 people per hour."
--Wikipedia