The captivating walk through the Mostnica Gorge and into the Voje Valley (and back again) is both varied and enjoyable. You have to pay a small fee (a few euros) to enter the gorge, but it is well worth it to take the footpaths that undulate alongside this enchanting river. If you do the whole thing (starting from Stara Fužina), it could take about five hours of walking, but you can turn around whenever you please and perhaps enjoy a bargain beer at the well-situated bar at the end of the gorge. In September, at least, the trails are pleasingly empty.