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In page Ullern:
"Ullern had several ski jumping hills in the past. Ullernbakken in Ullernåsen was demolished in 1958.[3] Another hill, Husebybakken, was the venue of the competition Husebyrennet between 1879 and 1891. The competition was moved to the hill Holmenkollen in 1892, starting the Holmenkollen ski festival.[4]
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