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Photo: Jan Pešula, CC0 via Wikimedia Commons
An unfinished 2.5-km long train tunnel (be sure to have a good headlamp!), accessible by general public, connects Slavošovce and Magnezitovice. The northern entrance is easily accessible, the southern has layers of stream sediments and thus you may get very dirty trying to cross it (or even get stuck in 1-m deep mud at times). Different happenings take place here at times.
Slavošovce is a small village and municipality in the Rožňava District in the Košice Region of middle-eastern Slovakia. Slavošovce is known for its beautiful hiking trails and scenery. Village at the time of this writing has around 1900 people. The Rodný dom Pavla Dobšinského museum is located here. This museum is about the famous Slovak folklore collector Pavol Dobšinský.
© OpenStreetMap contributors
A small, approx. 45 minutes long, but unique cave. "Decorated" with aragonite formations—only 3 such caves were discovered so far in the world. Closed November-March.
Gombasec
Frozen all year long, this freely accessible cave is lowest altitude ice cave in Europe. Going outside the designated path is prohibited. The cave lies up a small flat hill in a picturesque nature that is worth seeing on itself.
One of the most recognizable buildings in the area. The castle was damaged by fire in 2012, and remains closed for public.