<explorers></p><ul><li>Under the aegis of LVHK <spanlang="de">Oberösterreich,</span> 1961-present,</li><li>Austrian National expedition took place in 1965,</li><li>Both LVHK <spanlang="de">Oberösterreich</span> and LVHK <spanlang="de">Steiermark</span> worked together in 1973.</li></ul><p></explorers>
<underground_description>The labyrinthine system contains several levels of development, mostly southwards towards <ahref="5.htm"><spanlang="de">Nagelsteghöhle</span></a> (the probable resurgence at 850m). The current deepest point (a sump) has been reached by systematically traversing over pitches of 40 to 90m.</underground_description>
<equipment></equipment>
<references></p><dl><dt>78.2012</dt><dd><cite>(GSAB) <spanlang="fr">Spéalp</span> 1 (June 1977) pp 33-49</cite>, <b>Totes Gebirge: <spanlang="fr">Description des principaux gouffres de la zone ouest du massif</span></b>, <spanlang="fr">Jean Claude Hans & Etienne Degrave</span><br/><ahref="../../others/gsab/en/782012.htm#id55">English Translation</a><br/><ahref="../../others/gsab/fr/782012.htm#id55"lang="fr">En Français</a></dd></dl><p>The description is translated mainly from reference 78.2012 by Andy Waddington and Jill Gates, with additional info on dates/lengths as cited.</references>
<notes></p><p>More information on this cave, by those exploring it, can be found on the <blang="de-at">Landesverein für Höhlenkunde in Oberosterreich</b> site, with text available in both <ahref="http://alpha.aec.at/cave/cave.html">English</a> and <ahref="http://alpha.aec.at/cave/index.html"lang="de-at">German</a> and with a number of excellent photos.</p><ul><li>The cave had been surveyed to 6000m long and -216m by 1965. An Austrian National expedition in 1965 reached -530m.</li><li>A sump in the <spanlang="de">Hinterland</span> at -538m was reached in 1966, when the length was over 10.3 km.</li><li>In 1970, <spanlang="de">Großen Rundgange</span> and <spanlang="de">Ischler Esteiler</span> brought the length up to 16.3 km.</li><li>In October 1973, the <spanlang="de">Dunkler Grund</span> area led to -718m, (-723m in some sources) at which time the length was 18km.</li><li>In 1975 the system was connected to the nearby <spanlang="de">Planer-Eishöhle.</span></li><li>The length in January 1976 was 19052m and in December 1977, 20155.5m.</li><li><spanlang="de">Sektion Ausseerland</span> journal gave 23900 m in July 1980.</li><li><spanlang="fr-be">Spéleo Flash</span> number 128 gives 16 entrances and a length over 30km.</li><li><spanlang="de">Die Höhle</span> 1986(3) gives 747m, 40km, which is about the same as LVHK <spanlang="de">Steiermark</span> Journal for 1984, which states length 40.2km, depth 746m as at the end of 1984.</li><li>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).</li></ul><p></notes>
