Best for technical divers, 10-21m, shore entry, mild current.
Rockfall is a technical cave dive site in Australia requiring advanced certification and rigorous planning. Divers access the water via a shore entry, navigating the Rockfall Chamber, a 60-metre long pile of unstable, loose rock. The site features near-static water with depths ranging from 10 to 21 metres. Visibility is variable between 1 and 10 metres, and the environment presents significant hazards including entanglement risks, overhead restrictions, and potential silt-out. A distinct thermocline exists, with colder water temperatures requiring careful thermal management. Due to the challenging nature of the cave, this site is reserved for highly experienced cave divers only.
-31.96582, 125.91665
Given the entanglement risk and overhead environment, carry at minimum one cutting tool and a spool with a surface marker buoy, and plan your deco stops conservatively before the dive rather than in the water. Facilities are limited, so confirm local logistics well in advance.
The site is located 12km west of Cocklebiddy Roadhouse and 10km north of the Eyre Highway. Access is via an unsealed track. A permit must be obtained in writing from the Western Australia Department of Parks and Wildlife at least four weeks in advance. The entrance is a collapsed sinkhole (doline) and all gear must be carried down a steep 90m descent to the entrance lake.
Recorded at this site
Depth
10-21m
Visibility
1-10m
Skill Level
Technical
Entry
Shore
Water Temp
1°C
Current
Mild
Typical Dive
240 min
Best Time
Apr, May, Jun, Jul, Aug, Sep, Oct
No nearby dive sites found within 50km.
No, Rockfall is an extremely hazardous technical dive site suitable only for highly experienced and certified cave divers.
The site depths range from 10 to 21 metres, with an average depth of 10 metres.
The best months to dive Rockfall are April, May, June, July, August, September, and October.
No, this is a technical cave dive site with overhead environments and deep sections that are not suitable for snorkelling.
As this is a cave environment, there is no specific marine life observed at this site.
Rockfall in Cocklebiddy is a shore dive. The site is located 12km west of Cocklebiddy Roadhouse and 10km north of the Eyre Highway. Access is via an unsealed track. A permit must be obtained in writing from the Western Australia Department of Parks and Wildlife at least four weeks in advance. The entrance is a collapsed sinkhole (doline) and all gear must be carried down a steep 90m descent to the entrance lake.
Diving at Rockfall in Cocklebiddy requires the following certifications: Cave, Advanced, Technical. Always dive within your training limits.
A drysuit recommended is recommended for diving at Rockfall in Cocklebiddy. Water temperatures range from 1°C to 1°C.
Rockfall in Cocklebiddy typically has mild currents that most divers can handle comfortably.
Visibility at Rockfall in Cocklebiddy typically ranges from 1 metres to 10 metres. Conditions vary with weather, tides, and seasons.
