Beyond the rafting runs, the upper Soča narrows into slot gorges where the river glows an unearthly blue-green between marble-smooth walls. Guided 'river trekking' trips combine gentle swims, small jumps and floating on your back watching the canyon rim slide past. Wetsuits are provided against the alpine chill. It is the closest swimming gets to flying.
Featured in Ten wild swimming and water adventures across Europe · Adventure