Unica under the old bridge at Haasberg
The karst river Unica, which emerges from Planina Cave and crosses Planinsko polje, is mostly too shallow to dive in summer – except below an ancient stone bridge near the ruins of Haasberg manor, where the road embankment channels the whole flow under the arches and scours a pool up to about 4 m deep. The pool is full of large fish waiting for food swept through the arches; smaller fish stay in the shallows. Even in summer heat the water is barely 11 °C and usually very clear at low water. The pool only has room for one buddy pair at a time; a dive with a short excursion above the bridge takes about 30 minutes.
Tiefe: 0–4 m