Orange Speleological Society

The Orange Speleological Society (OSS) is a caving club based in Orange NSW, Australia.

OSS is a founding member of the Australian Speleological Federation.

Orange Speleological Society


Save Cliefden Caves

Cliefden Caves are currently under threat from a proposal to construct a new dam. Please visit for more information.

Upcoming events

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    Contact us

    Email us or post us.

    What we do

    Recreational caving

    We visit caves in the Orange region and around Australia. Most of these caves are wild caves, requiring equipment such as torches, helmets and sometimes ladders and ropes.

    Surveying and mapping

    We survey caves and use the survey data to create maps.


    We protect caves to minimise the effects of human activity. We also restore caves that have been previously damaged.


    We search for new caves using maps, aerial photography and information from local sources.

    Join us

    Membership has many benefits. You can join our regular trips, visit caves not accessible to the general public, learn caving techniques from experienced leaders and receive copies of the club's journal, "Descent".

    To get you started you will need to provide some basic equipment such as overalls (or old clothes), sturdy footwear, and a reliable light source with spare batteries. Club equipment such as ladders and ropes will be available for your use.

    You will automatically become a member of the Australian Speleological Federation (ASF), with a subscription to the ASF's journal, "Caves Australia".