Weaver Cave

Weaver Cave (Slovene: Tkalca jama), also known as Inlet Cave (Zatočna jama), is a 2,885 metres (9,465 ft) long ponor cave in southwest Slovenia. It runs from the west (downstream) side of the Rak Škocjan Valley, where it has two entrances, and continues into Planina Cave. It is traversed by Rak Creek, part of the Ljubljanica source system. It thus forms part of the hydrological connection between Cerknica Polje and Planina Polje.[1] Due to sumps, the stream of the Rak is very difficult to follow and was explored by divers only in 1974, when the majority of the cave was discovered in the course of a rescue expedition,[1] and in August 2012.[2]

The cave was named after a stalagmite reminiscent of a weaver.[3] An old story says that he was turned to stone because he worked on Sunday, the Lord's Day.[4] The first description of Weaver Cave was published in 1687 by Johann Weikhard von Valvasor in the Philosophical Transactions of the Royal Society. He also published an engraving of it.[3] The cave has also been depicted by other artists, including Franz Goldenstein (1808–1878) in the 1850s. His painting of the Great Natural Bridge of Rak Škocjan as seen from the inside of the cave is on display in the National Gallery of Slovenia.[3]


  1. Prelovšek, Mitja (2009). Present-Day Speleogenetic Processes, Factors and Features in the Epiphreatic Zone: Dissertation (PDF). University of Nova Gorica. pp. 217–228.
  2. "Tkalca jama, 28.8.2012" (in Slovenian). Rakek Caving Society. Retrieved 29 April 2013.
  3. Shaw, Trevor; Čuk, Alenka (2012). Slovene Caves & Karst Pictured 1545–1914. Research Centre of the Slovenian Academy of Sciences and Arts. pp. 105–112. ISBN 9789612543693.
  4. "Rakov Škocjan - Tkalca jama" [Rak Škocjan - Weaver Cave]. Kraji.eu (in Slovenian). Retrieved 29 April 2013.

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