Gaustabanen runs 860m deep into the core of Gausta before a different train climbs an incredible 1040m, alongside 3500 steps at a 40-degree angle, to 1800m, just below the Gaustahytte, not far from the summit. It was built by NATO in 1958 at a cost of US$1 million to ensure it could access its radio tower in any weather. Taking the railway is an incredible experience, although it's not for the claustrophobic. The base station is 10km southeast of Rjukan.
