The Geirangerfjord zipline opened in 2018 as Norway's first fixed-line aerial traverse spanning a UNESCO World Heritage fjord valley. Mounted 140 metres above the glacial water, the twin steel cables stretch 800 metres from Geirangervegen's eastern ridge to the forested slope opposite, crossing the point where the Seven Sisters waterfall descends in seven parallel streams. The installation was engineered to leave no foundation on the fjord floor itself — anchor towers are set into bedrock on either side, and the cables hang in a shallow parabola that avoids the cruise ship navigation corridor below. Flight time averages 90 seconds at speeds reaching 80 kilometres per hour, though wind conditions in the valley can slow riders to 60. Geiranger's topography — a five-kilometre fjord arm carved 15,000 years ago by the retreating Jostedalsbreen ice sheet — creates the thermal updrafts and crosswinds that make the zipline distinct from inland installations. The valley walls rise 1,400 metres on both flanks, funneling air from the Sunnmøre Alps and producing what operators describe as a "pendulum effect" midway through the crossing. Riders pivot slightly as they pass over the deepest section of the fjord, where the water reaches 260 metres below the surface. The zipline forms part of a larger adventure park infrastructure on the eastern slope, including via ferrata routes and a suspended bridge network that opened in 2022. Those additions increased the park's footprint to 12 hectares but left the zipline itself unchanged. The crossing offers unobstructed sightlines to Geirangerfjord's signature waterfalls — the Seven Sisters to the south and the Suitor directly across the valley — as well as the abandoned farm terraces at Skageflå, visible as a green platform 250 metres up the northern face. The fjord's status as a UNESCO site since 2005 has limited commercial construction along the water, making the zipline one of only three built structures between the village centre and the Flydalsjuvet overlook. The park operates year-round, though ice accumulation on the cables halts flights when temperatures drop below minus five Celsius, typically 20 to 30 days between December and February. The harness system uses a dual-pulley trolley that eliminates braking friction, allowing riders to coast to the landing platform without manual intervention. The return to the launch point requires a ten-minute walk uphill or a shuttle van that runs every 20 minutes during peak season.