The Chýnov cave was discovered in 1863 during works in a quarry. In 1868, after necessary adaptations, this became the first Czech cave accessible to the public.The principal wealth of the cave is not stalactites and stalagmites but colourful walls and ceilings, where white, yellow and brown marble facets take turns with dark amphibolite fillings. The total length of the cave system, not fully investigated yet, is over 1,200 m, with 220 m already accessible to the visitors. Visit the cave and upload a picture of the entrance ticket as a proof.
You can find useful information about opening hours and admission on the official web page.