The István Cave is a limestone cave in Miskolc-Lillafüred, Northern Hungary.
The cave was formed in the Triassic period and is about 710 m long. It was discovered in 1913. According to local legend, a dog fell into a 15-metre deep shaft, which was the cave's only natural opening. People found the cave when they rescued the dog. Cavers began to explore the cave in 1927. Another entrance was made for the tourists, and in 1931 the cave was opened to the public.
During World War II, the cave was damaged, with many of the stalagmites and stalactites were broken by people seeking refuge from air raids. The lighting was repaired only in 1955, and the cave was opened to the public again.
Wikipedia https://en.wikipedia.org/wiki/István_Cave
Official Website https://termeszetvedelem.hu/talalati-oldal/?type=orszagos-barlangnyilvantartas&id=5372-1
Hellomiskolc https://www.hellomiskolc.hu/product_info.php?products_id=28
Address 19 Egri országút, Lillafüred 3517, Hungary
Coordinates 48°5'58.779" N 20°37'16.93" E