Sinkhole
Little Blue Lake
Basic Cave: CDAA site rating [1]. These categories are the named scheme's own; they describe the training a site calls for.
A roadside sinkhole used as a local swimming hole, with rubbish (including an old car) on the bottom. Rated Basic Cave by the CDAA; visibility swings from very poor to very clear.
Little Blue Lake is a council-owned sinkhole beside the road near Mount Schank, used by locals for swimming and by CDAA members for diving. The CDAA notes roadside access with ample off-street parking and has provided a change table.
The CDAA describes debris on the floor, including an old car and a petrol bowser, and warns that visibility is often very poor during algal blooms or after heavy rain, though it can be extremely clear at some times of year.
The environment
Open freshwater sinkhole with daylight throughout the upper water; debris on the bottom.
Conditions
Visibility depends on season: often very poor in algal blooms or after heavy rain, very clear at other times.
Typical ranges from published sources, not current conditions.
Facilities
Off-street parking and a change table provided by the CDAA.
For orientation, not navigation. Hollow dots are approximate.
Every fact on this page, with its source (8)
| Fact | Status | Source |
|---|---|---|
| The CDAA directory rates Little Blue Lake (5L9) Basic Cave, owned by the local council (listed as Port MacDonnell Council). | Verified | [1] |
| During algal blooms or after heavy rain visibility is often very poor, though it can be extremely clear depending on the time of year. | Verified | [2] |
| Divers must be booked on to the site before diving. | Verified | [2] |
| The CDAA notes ample off-street parking at the roadside site and has provided a change table. | Verified | [2] [3] |
| Coordinates are the mapped sinkhole beside the public road.Public roadside site. | Verified | [4] |
| Coordinates are the mapped sinkhole beside the public road.Public roadside site. | Verified | [4] |
| Divers must be booked on to the site through the CDAA before diving; the CDAA rates it Basic Cave. | Verified | [1] [2] |
| The CDAA lists the site as council-owned and requires a booking before diving; no closure is noted.Status as shown on 2026-10-14. | Verified | [1] [2] |
Verified: stated by an official or primary source we opened. Reported: from a secondary source only. Sources conflict: the note gives both versions. May be out of date: the newest source we found is old.
Written in our own words from the sources above. Report a correction