Tartışma:Düdensuyu Mağarası

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    Dear friends

    In years 1989, 1993 and 1995 there were expeditions of speleo group Geospeleos from Prague, Czech Republic. They dived two sumps and found ans mapped more than 2 km of huge cave galleries. Expedition in 1997 which target was to dive third sump was stopped by local authorities. The map you may find here: map of Altin Besik