This article was produced by National Geographic Traveller (UK).
Halfway across Napoleon Bridge — spanning the River Soča as it rushes through a narrow limestone gorge — I stop dead in my tracks. At the southeastern edge of Triglav National Park, home to Slovenia’s highest mountain, 2,864-metre Mount Triglav, the landscape has erupted in green, its various shades highlighted by the sun. It shines down on the water, turquoise and clear; it plays on the beech and spruce trees, lining the banks with splashes of emerald, teal and lime. Looking north, the Soča snakes out of sight where…