It is part of the large Schwarzmooskogel cave system (German: Schwarzmooskogelhöhlensystem), and is named after a nearby natural arch.

[2][3] The originally discovered entrance A is primarily used as a route to the deepest part of the cave, "Razor Dance",[4] a narrow rift of over 500 metres (1,600 ft) extent.

Most other explorations begin at entrance E, which leads through an awkward crawl to a 30-metre (98 ft) pitch that has a deposit of snow at the bottom most years.

[10] Subway Level,[11] the lowest stratigraphical layer of the cave, can then be reached by descending 100 metres (330 ft) down the Four Pitches of the Apocalypse.

In 2014 the cave was connected to the Schwatzmooskögel System which has a combined length of over 126 kilometres (78 mi) and a vertical extent of 1,112 metres (3,648 ft).