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Nullarbor

Weebubbie Cave

Closed to divers

Closed: according to cavediving.net.au (April 2026) the cave has been handed to the Mirning Traditional Lands Aboriginal Corporation and access is being arranged anew. The CDAA page still names the old application to the Department of Planning, Lands and Heritage.

Source: cavediving.net.au – Weebubbie ↗
  • Max depth45 m
  • CertificationFull cave
  • SpecialRopework
Directions

Diving and fills

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Now at Weebubbie Cave

Status
Closed

What it looks like

All 4 videos and posts

Videos and posts

From other divers, via YouTube, Instagram and Facebook. They only load when you click; after that, Google's or Meta's privacy rules apply.

Search for more onYouTube ↗Instagram ↗Facebook ↗

Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.

The dive

The water is brackish and 18–19 °C, with visibility of 30 m and more. Bacterial colonies live in the Railway Tunnel. The first diving expedition was in 1972.

In the huge tunnels it is easy to lose the line; in 1972 a team took the wrong tunnel out of the Inner Dome. 'WAY OUT' is now written on the wall and a fixed line is in place. Loose overhanging walls at the entrance.
Source: CDG – Weebubbie history (Lewis 2013) ↗Source: Divernet – The Nullarbor: the big ones ↗
Profile and sections

The water is brackish and 18–19 °C, with visibility of 30 m and more. Bacterial colonies live in the Railway Tunnel.

The first diving expedition was in 1972.

Source: CDAA – Weebubbie ↗Source: cavediving.net.au – Weebubbie ↗Source: CDG – Weebubbie, Olwolgin and Burnabbie (2012) ↗
Depth and profile
Main lake of 150 m, a 100 m sump to the Inner Dome; the Railway Tunnel of more than 150 m to ~45 m deep; a small lake to 28 m. The deepest cave of the Nullarbor.
Configuration
Huge passages: every configuration. CDAA rating: Sinkhole (the north pool), Cave (most of it), Advanced Cave below 40 m.
Gas
Trimix from 40 m
Who can dive where
  • CaveAt least Full cave
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveGoes down to 45 m (trimix or deco may be needed) · doesn't decide who may dive
  • Whole caveRopework (SRT) needed
RopeworkDry sections / haulingPermission needed

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

Source: CDAA – Weebubbie ↗Source: cavediving.net.au – Weebubbie ↗Source: CDG – Weebubbie, Olwolgin and Burnabbie (2012) ↗

How to get there

~13 km north-west of Eucla; a registered Aboriginal site. A doline ~40 m across and a ~70 m descent by ladders or ropework; gear is hauled 30–40 m, then ~200 m of dry passage to the lake.

Plan your route ↗

Around Weebubbie Cave

FillsNo fill station known nearby
Other sites6

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Sources, sharing and disclaimer

Sources

Source: CDAA – Weebubbie ↗Source: cavediving.net.au – Weebubbie ↗Source: CDG – Weebubbie, Olwolgin and Burnabbie (2012) ↗

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Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (Oct 2026): the Cave Divers Association of Australia (site list, site pages, visitor permit), cavediving.net.au, CDG reports (caves.org.au), Buzzacott & Skrzypek (2021), Divernet, Shearwater (Pannikin, 2023), DBCA, the Shire of Dundas, the Royal Flying Doctor Service, Fiona Stanley and Royal Adelaide hospitals, DAN, SA Parks and the Federal Court (Mirning, 2017). No coordinates are published for any dive cave: no pins, drive times from Cocklebiddy Roadhouse approximate. The certification per cave is an estimate from the CDAA rating; you also need that rating and written permission from the land manager.