page_title: Ponor
hierarchical_section_title: Ponor
caption_attribution_description: Slovenščina: Rakov Škocjan English: Natural park in Slovenia, guided tour to Zelška jama. Karst river with Karst spring, collapsed in large Ponors in Inner Carniola. photo:Ziga 18:46, 7 April 2007 (UTC)
context_page_description: A ponor is a natural opening where surface water enters into underground passages; they may be found in karst landscapes where the geology and the geomorphology is typically dominated by porous limestone rock.
context_section_description: A ponor is a natural opening where surface water enters into underground passages; they may be found in karst landscapes where the geology and the geomorphology is typically dominated by porous limestone rock.
caption: One of several ponors of the Rak River, Slovenia
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