 The exploration of Lamprechtsofen has been primarily conducted from the bottom (from the resurgence of its cave river), rather than the top-down exploration typical for vertical caves.On August 19, 1998, a team led by Polish caver Andrzej Ciszewski discovered a connection between Lamprechtsofen and the PL-2 cave system, which established the height difference of the united cave system as .This new discovery made Lamprechtsofen the deepest-known cave in the world for less than three years, since Krubera was discovered in June 2001 to be deep.