Tábor-hegyi Cave, Natural cave in Tábor Hill, Budapest, Hungary.

Tábor-hegyi Cave opens at 311 m above sea level on the steep, rocky eastern side of Tábor Hill, in the Buda Hills. It is Hungary's second-longest cave formed in Triassic dolomite, after the Királylaki Cave found in 2011. Its passages follow an inclined tectonic fault; a short entrance niche leads to a hall about 5 m long, then a 10 m corridor, with a parallel 12 m fissure alongside. The entrance is barred with an iron grille.

The cave lies in Triassic dolomite with flint, along an inclined tectonic fault. According to Schreier Ferenc, the dolomite was crushed where tectonic fractures met, and seeping water widened the cracks into rock cavities by corrosion. Horusitzky Henrik published the first short description in 1913, and Ottokár Kadić surveyed the cave in August 1919 with Imre Som, producing plan, longitudinal and cross-section maps.

The cave has been known in literature under many names, including Óbudai-barlang, Hármashatárhegyi-barlang and Farkastoroki-barlang; the name Tábor-hegyi-barlang was first used in 1976. Ottokár Kadić surveyed it in August 1919 with Imre Som, and the Pannonia Tourist Association's cave research section helped map it.

The easiest approach is the green Ω (green cave) trail starting at Erdőalja út; take bus 137 and get off at the Erdőalja út 43 stop, then walk a little back to the first marker. From the Hármashatárhegyi út, leave the blue National Blue Trail near the Fenyőgyöngye restaurant onto the green-cross Fekete salak út, from which the green Ω path branches off. Entry requires a permit from the Duna–Ipoly National Park Directorate, and the area around the grated entrance is neglected and littered.

The cave's entrance opens just above the Óbuda cemetery, and in 1919 Ottokár Kadić judged it unsuitable for excavation because it holds too little sediment fill. A parallel fissure 12 m long runs directly beside the cave and connects with its entrance hall.