Skip to content
WAnimals
  • Map
  • Species
  • Parks
  • Diving
Log inCreate account
WAnimals

The guide for travellers and animal lovers: discover, plan and share your wild adventures around the world.

Discover wildlife

  • Species
  • Ecosystems
  • Glossary
  • Tags

Explore places

  • Map
  • Countries
  • Parks
  • Diving

Plan experiences

  • Guides

Learn

  • Blog

Resources

  • Help centre
  • Contact
  • Install the app

Follow us

Account

  • Log in
  • Create account

© 2026 WAnimals. All rights reserved.

About usHow we build our profilesTerms of servicePrivacyLegal notice
MapSpeciesParksDiving
  1. Home
  2. Diving and snorkelling
  3. Australia
  4. Kilsby Sinkhole

Kilsby Sinkhole

Freshwater limestone sinkhole
Depth: 5–40 mLevel: Open Water in the areas with no overhead; Cave Diver for the enclosed environmentsAll year round
Spotted something wrong?

A limestone shaft about 65 m deep overall, shaped like a boot and filled with extraordinarily clear fresh water. It combines open, roofless sections accessible on a basic qualification with enclosed areas that require cave training.

Depth

5–40 m

Recommended level

Open Water in the areas with no overhead; Cave Diver for the enclosed environments

Current

None

Did you know?

Its history explains Australia's current regulations: in the 1950s people dived here with no prior training and, after a double drowning, the property became a weapons research centre. Later an agreement was reached between the owners and the Cave Divers Association of Australia to reopen it. Following several deaths at Kilsby and in the neighbouring sinkholes, the association tightened its requirements: it is worth finding out what they are before booking. It is also open to freedivers and snorkellers through the approved operators.

Sources consulted: PADI Blog; dive.site; Koox Diving; drardiving.com

Notable wildlife: Kilsby Sinkhole

the appeal is the clarity and the play of light

Ecosystem

Cave / cenote

Similar dive sites

Which other dive sites are like this one?

Same country: Australia

Same country: Australia

Same country: Australia

Keep exploring

Based on what we already know about this dive site.

Comments

Share your experience diving or snorkelling at Kilsby Sinkhole.

Be the first to comment.

Access

On private land; only with the authorised operators

Best season

All year round

Plan your dive

Best season
All year round
See location

Same country: Australia

Australia · Mount Gambier, South Australia
Vertical oceanic wall / Cave

Christmas Island

Australia

Up to 40 m · Open Water on the shallow reefs; advanced on Perpendicular Wall

Whale sharks · manta rays

See dive site
UNESCO
Coral reef

Heron Island

Australia

Up to 30 m · Open Water

Nesting green and hawksbill turtles · manta rays

See dive site
UNESCO
Coastal reef

Ningaloo Reef

Australia

Up to 25 m · Open Water

Between 300 and 500 whale sharks a year; giant manta rays · turtles

See dive site
CountryAustralia
This page in other languages: Español · Deutsch · Français · Português · Italiano
More places in Australia
UNESCO
Platform reef

Norman Reef

Australia

Up to 25 m · Open Water

Reef sharks · turtles

See dive site