True 1626-55 Raucherkarhöhle 1626 4/T/S/E x 55 1626-55a a 1626-55b b 1626-55c c 1626-55d d 1626-55e e 1626-55f f 1626-55g g 1626-55h h 1626-55i i 1626-55k k 1626-55l l 1626-55m m 1626-55n n 1626-55o o 1626-55p p 1626-55q q

Under the aegis of LVHK Oberösterreich, 1961-present,
Austrian National expedition took place in 1965,
Both LVHK Oberösterreich and LVHK Steiermark worked together in 1973.

The labyrinthine system contains several levels of development, mostly southwards towards Nagelsteghöhle (the probable resurgence at 850m). The current deepest point (a sump) has been reached by systematically traversing over pitches of 40 to 90m.

78.2012: (GSAB) Spéalp 1 (June 1977) pp 33-49, Totes Gebirge: Description des principaux gouffres de la zone ouest du massif, Jean Claude Hans & Etienne Degrave
English Translation
En Français

The description is translated mainly from reference 78.2012 by Andy Waddington and Jill Gates, with additional info on dates/lengths as cited.

More information on this cave, by those exploring it, can be found on two pages on the Höhlenforschung in Oberösterreich site, with text available in German and with a number of excellent photos.

Landesverein für Höhlenkunde in Oberosterreich site itself

The cave had been surveyed to 6000m long and -216m by 1965. An Austrian National expedition in 1965 reached -530m.
A sump in the Hinterland at -538m was reached in 1966, when the length was over 10.3 km.
In 1970, Großen Rundgange and Ischler Esteiler brought the length up to 16.3 km.
In October 1973, the Dunkler Grund area led to -718m, (-723m in some sources) at which time the length was 18km.
In 1975 the system was connected to the nearby Planer-Eishöhle.
The length in January 1976 was 19052m and in December 1977, 20155.5m.
Sektion Ausseerland journal gave 23900 m in July 1980.
Spéleo Flash number 128 gives 16 entrances and a length over 30km.
Die Höhle 1986(3) gives 747m, 40km, which is about the same as LVHK Steiermark Journal for 1984, which states length 40.2km, depth 746m as at the end of 1984.
The World Deep/Long caves list (end 1995) from Bob Gulden of the NSS Geo² Long and Deep caves committee gives 70km and 725m, quoting BCRA Caves & Caving number 44, p 47 as its source (Summer 89). In June 2018 the system is 147km long with a vertical range of 1060m, and extended to 150km in November 2019.

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