Onmeetbarediepgat
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Onmeetbarediepgat is one of the major caves in the Quaternary limestone formations in the district of Bredasdorp in the Western Cape Province of South Africa. The name in Afrikaans means "Immeasurably deep hole" and is almost impossible for the average English tongue. (Try 'Orn me ert bar ah deep xut', where x is the sound of ch in the Scottish pronunciation of 'loch'!). The cave system is expressed at the surface as a sinkhole about 50m wide and 20m deep. The bottom is covered with limestone rubble. A small hole leads into a substantial cave system, which has been explored since the 1950's, mainly by the South African Spelaeological Association, or SASA. Entry to distal parts of the cave is hindered by sumps.