Allendale East Sinkhole

Located along Riddoch Highway, the Allendale East Sinkhole separates traffic lanes which divides the Riddoch Highway.Legend has it the cave in the middle of the road was found when it opened up and swallowed a horse and cart over a century ago. Once used as a watering hole for Bullock Teams, divers regularly explore its 35 metre underground system while cars travel unaware overhead.

Please note there is restricted access to the sinkhole, visitors must be a current member of the Cave Divers Association of Australia to gain access.

Caroline Sinkhole

Caroline Sinkhole is located within Penambol Conservation Park and holds several walking trails within inclduing both the butterfly and wombat walks.

Please note dogs are not permitted in the Penambol Conservation Park.

Ewens Ponds Conservation Park

Ewens Ponds are spring-fed limestone ponds which channels through three different basin shaped areas accessible by snorkeling or scuba diving.

Please note diving/snorkeling permits are required through National Parks and Wildlife Services South Australia and Ewens Ponds are closed annually during Spring.

Hells Hole

Hells Hole is a cenote (a sinkhole that extends into open water) and has a viewing platform to take in the 45m wide sinkhole. A walking trail has been established onsite as an easy walk to and from the sinkhole and carpark.

Please note there is restricted access into the sinkhole, visitors must be a current member of the Cave Divers Association of Australia to gain diving access and a permit must be obtained from Forestry South Australia.

Kilsby Sinkhole

Kilsby Sinkhole is located in the middle of a privately owned sheep farm which attracts many recreational divers and South Australian Police divers. Scuba diving, snorkeling and sinkhole tours are offered by a privately owned local  family company.

Please note bookings must be made for any tour by booking online via the Kilsby Sinkhole website.

Little Blue Lake

The Little Blue Lake is one of the many water filled sinkholes which provide a "window" into the underground water system and a cool swim for experienced swimmers. A floating pontoon and stairs to access are available on site for visitors to enter the water safely.

Please note camping is not permitted in the carparking area and jumping from the cliffs is also not permitted.

Piccaninnie Ponds Conservation Park

Piccaninnie Ponds forms part of the Karst Wetlands Ramsar Site and is made up of naturally shaped underwater caverns; The Chasm and The Cathedral. A walking trail is also located within the Conservation Park showcasing views of the Southern Ocean and Lower South East Marine Park.

Please note permits are required for diving and snorkeling activities which can be booked through National Parks and Wildlife Services South Australia.