Zip down from the top of the Holmenkollen Ski Jump to the bottom of the hill! Kollensvevet zipline is 361 metres of pure adrenaline, and you will get an unforgettable view of Oslo as you sail down from the city's famous landmark. The elevation drop is 107,5 metres. Kollensvevet is open to the public in the spring, summer and autumn. Open for pre-booked groups outside of regular opening hours. The ticket includes entry to the Ski Museum.