Caiguna Blowhole Rest Area

GPS: -32.27688 , 125.43117
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Free Overnight CampDay Rest AreaShadeBinCaravansLong RigPets WelcomeInformation BoardBird Watching
  • Day Use Area
  • Overnight Rest Area
  • Information
  • Place of Interest
Eyre Highway
Caiguna WA 6443
  • Interesting place to visit
  • Bin and information boards
  • Room for most rigs
  • Single entrance
  • Strong mobile phone signal

Driving Directions

5km west of Caiguna Roadhouse on the westbound side of the Eyre Highway.

Last updated by Clyde Camel on 10th September, 2014
Caiguna Blowhole Rest Area is a small circular rest area with tracks leading way back into the scrub. There is room for most rigs here, but perhaps not a bus towing a trailer.
There is a bin and some information about the blowhole. No other facilities.

The Nullarbor is the largest karst (limestone rock) area in the world. It is also the driest, with an average annual rainfall of less than 250mm. As a result, the weathering of the limestone has been much slower.

There are some significant cave systems in the limestone of the Nullarbor. When the entrance is small, airflow can be detected through the entrance.

The outside air pressure varies according to the weather system that is currently in the area. As low and high pressure systems move over the region, it causes a difference in pressure between the outside and the inside of the cave. As the air equalises by either flowing into or out of the cave, the airflow through the entrance can be significant.
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