The Buhui Rivulet is a tributary of the Caraş River in Romania. The river first flows through Buhui Lake. Thereafter it flows through the Buhui Cave and, after emerging from the cave, flows through a reach of narrow gorges before joining the Caraş River.
The cave has a gallery of various sizes, with many turns and a few big rooms along. Both of the main gallery and the rooms start as short side galleries, the end is clogged with concrete or alluvial material. The Buhui Creek appears in upstream end of the main gallery, receives the tributary stream Certej next the entry with the same name, partially losses water through sinkholes and some tears. It completely disappears next the second entry (Dolina, 975 m downstream), then it reappears 108 m downstream through an intermittent spring, forming waterfalls and deep domes up the dam at Buhui entrance. The cave can be crossed from one end to another, but to avoid more difficult obstacles is recommended the use of the three successive entries.
The Buhui Cave is impressive not only in size but also by the wide variety of galleries and halls with concretions and fossils. It has a great scientific importance due to its karst hydrology and bio-speleological aspects. Therefore it was proposed in 1969 as a speleological reserve.
Photos from here