Written by Ben Cole· Updated Mar 2026Quick Actions
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About Tantanoola Caves Conservation Park
A single large limestone cave chamber with impressive stalactites, stalagmites, shawls, and cave coral formations, located near the small town of Tantanoola between Mount Gambier and Millicent. The cave was formed in marine limestone deposited 20 million years ago and is noted for the variety and delicacy of its speleothems. Access is by guided tour only and the cave is maintained in excellent condition.
About
A single large limestone cave chamber with impressive stalactites, stalagmites, shawls, and cave coral formations, located near the small town of Tantanoola between Mount Gambier and Millicent. The cave was formed in marine limestone deposited 20 million years ago and is noted for the variety and delicacy of its speleothems. Access is by guided tour only and the cave is maintained in excellent condition.
Warnings
Getting There
Located on Princes Highway, 10km north of Millicent and 50km northwest of Mount Gambier. Well-signposted from the highway.
Visitor Tips
- •Check tour times before visiting as sessions are scheduled — don't turn up and expect instant entry. A quick stop for those driving between Adelaide and Mount Gambier.
Quick Facts
At a Glance
The Place
- Significance
- Regional
Plan Your Visit
- Entry
- Paid
- Duration
- 1 hour
- Best Time
- Year-round
Location
- Region
- Limestone Coast
- State
- South Australia
Highlights
Activities
Features
Facilities
Nearby
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