Vadu Crișului Cave, Show cave in Bihor County, Romania.

Vadu Crișului Cave extends roughly 1,500 meters through limestone formations and contains an underground river that creates a waterfall about 6 meters (20 feet) high near the entrance. The system connects several chambers with different characteristics, of which about 680 meters are open for visitor access.

The cave was discovered in 1903 and opened to visitors in 1905 after Count Odon Zichy arranged for wooden bridges and stairs to be built inside. This early development made it one of the first show caves in the Bihor region.

The explorers who opened the cave in 1903–1905 gave the stalactites and stalagmites their names, including the Tomb of Mohamed, the White Eagle, Adam and Eve, and Snow White and the Seven Dwarfs. A legend attached to the Heaven and Hell galleries says that thinking of a girl you like before drinking from the spring in your palm will make her fall in love with you.

Access is available most weekdays and weekends during daytime hours, with guided tours covering the main sections. The ground is slippery in damp areas, so sturdy footwear and careful footing are needed throughout.

In 1912, a water-dye test proved that this cave connects with the Handl Cave (Öreg-barlang) at Révtízfalu, yet nobody has ever managed to pass from one to the other. The cave also holds bones of a cave bear, found in one of its three main passages.