Kossuth-barlang
A karst spring cave at Jósvafő in Aggtelek National Park whose end has been blocked by sumps since the 1950s. In 2009 the Amphora Búvár Klub passed the 'Reménytelen' (Hopeless) sump into a large new chamber, and later expeditions pushed further through more sumps with dives to about -47 m. It is an active exploration cave, not a visitor site; a cave diver died here in 2022 during a planned exploration dive, probably due to a collapse at around -48 m.
depth: 0–48 m