Caiguna Blowholes

Caiguna Blowholes are natural limestone blowholes located south of the Eyre Highway near Caiguna in the Shire of Dundas, Western Australia, on the Nullarbor Plain. Formed in the vast Nullarbor limestone, the blowholes vent air with changes in atmospheric pressure, creating a distinctive blowing sound. The site is a popular roadside stop for travellers crossing the Eyre Highway between Norseman and Eucla, offering insight into the region's karst geology and remote outback landscape.

Visitors can expect a remote outback setting on the Nullarbor Plain accessed via a gravel road south of the Eyre Highway near Caiguna Roadhouse. The site features several small openings in the flat limestone pavement that emit rushing air. A short walking track with safety fencing and interpretive signage leads to the blowholes. The surrounding landscape is flat, treeless and arid with expansive views. There are no buildings or staff on site, only a gravel parking area.