Bátori Cave, Natural cave in Nagy-Hárs Hill, Budapest, Hungary.

Bátori Cave is a cave system in Nagy-Hárs Hill in Budapest made up of several spherical chambers linked by steep shafts. The limestone walls contain deposits of hematite and limonite that create a distinctive underground environment.

Archaeological digs inside revealed bones of woolly rhinoceros and red deer, showing human activity dating back to the Neolithic period. These findings demonstrate the site has been in use for thousands of years.

The cave is named after László Báthory, a Pauline monk who retreated here as a hermit between 1437 and 1457. His presence is still remembered today and reflects the site's long spiritual history.

The cave entrance lies just below the summit of Nagy-Hárs Hill, on the northeast side, reached by following the yellow trail from Szépjuhászné or Hárs-hegy stations of the Budapest Children's Railway. Access is now controlled by the Danube-Ipoly National Park, and the horizontal passages connect through steep shafts that generally require technical equipment.

Inside there are named sections such as Great Stairs, Pyramid Branch, Tavas Hall, and Hall of Loyalty that give the cave a distinctive structure. These areas each have their own character and create a complex underground layout.