|At the road 203 Bovec-Kanin near Žaga. You can see the waterfall from the road, but there is a trail on the left side of the gorge.
|Karst spring in limestone cliff
|H=106 m, W=18-20 m, max amount of water 100 m³.
|road: yes, waterfall: no
|As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
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This waterfall, called Boka is the highest waterfall in Slovenia. The first stage is 106 m high and 18 m wide, the second stage is 33 m high and 18 m wide. Those stages are not clearly separated, so many people see only a single waterfall. Different heights are given, in the range 139 m to 144 m.
It is listed, as this is actually a spectacular karst spring: a subterranean river which emerges from a cave entrance in a high limestone cliff face creates this waterfall. As typical for a karst spring, the amount of water depends very much on the season, so the waterfall is rather impressive during snow melt or after heavy rains. The peak yield is 100 m³/s, while the lowest yield in autumn or winter is 2 m³/s.
The Boka creek is a tributary to the nearby Soča river, it is only 500 m long. The road crosses the Boka on a bridge which offers a great view of the upper part of the waterfall. There is also a parking lot and a single lane gravel road which goes to the foot of the waterfall. To see the karst spring you must take the trail which splits to the left 100 m from the parking lot. This trail goes uphill and has a via ferrata section before it finally reaches the spring. Although it is not far, the trail is 3.5 km long, has a height difference of 570 m and takes 3.5 hours. We strongly recommend appropriate shoes and clothing for this trip.