9 Norwegian resistance fighters have completed one of WW2's most audacious sabotage operations. Gunnerside, led by Joachim Ronneberg. Now they must escape. With 3,000 troops hunting them by skiing 250 miles across Norway to the safety of Sweden. In 2018, to mark the 75th Anniversary of Operation Gunnerside, Rob Ferguson FRGS undertook a solo, unsupported repeat of the escape. The Saboteur Run.