page_title: List of sinkholes
section_title: Sinkholes of Australia
hierarchical_section_title: List of sinkholes / Sinkholes of Australia
caption_attribution_description: The Grotto, Great Ocean Road, Victoria, Australia.
context_page_description: The following is a list of sinkholes, blue holes, dolines, crown holes cenotes, and pit caves. A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. Some are caused by karst processes—for example, the chemical dissolution of carbonate rocks or suffosion processes. Sinkholes vary in size from 1 to 600 m both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide.
context_section_description: Ewens Ponds –  series of three water-filled limestone sinkholes on Eight Mile Creek 25 kilometres (16 mi) south of Mount Gambier and 8.4 kilometres (5.2 mi)) east of Port Macdonnell, South Australia.
  Fossil Cave - a karst sinkhole in South Australia.
  Kilsby Sinkhole - a waterfilled doline located near Mount Schank in South Australia
  Koonalda Cave –   a cave located in Nullarbor Plain within South Australia.
  Little Blue Lake –   water-filled doline located near Mount Schank in South Australia.
  Numby Numby –  a sinkhole located 25 to 30 kilometres (16 to 19 mi) west-northwest of Borroloola in the Northern Territory of Australia.
  Piccaninnie Ponds Conservation Park
  The Grotto, Victoria –  a sinkhole geological formation and tourist attraction, found on the Great Ocean Road outside Port Campbell in Victoria, Australia.
  Umpherston Sinkhole - a sinkhole that was opened in 1886 in Adelaide.
caption: The Grotto, Victoria is a sinkhole geological formation and tourist attraction, found on the Great Ocean Road outside Port Campbell in Victoria, Australia
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