Pustá jaskyňa – Sifón rešpektu (Žikešov dóm)
Pustá jaskyňa belongs to the Demänová cave system in the Low Tatras. The inflow sump of its Žikeš Dome was first dived by Ivan Matocha in March 2004; after a crisis in which a regulator froze and the diver got tangled in the guide line, it was named the 'Sump of Respect'. On 22 January 2011 the Moravian diver Radek Husák passed it solo, reporting clear water and a fairly strong current; with Daniel Hutňan he then pushed on beyond the inflow sump. Earlier attempts (1997) to pass the inflow sump in the Agate Dome had failed.
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