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Large Pool, Paralana Hot Springs, Arkaroola, South Australia

Paralana (Radioactive) Hot Springs – Arkaroola, SA, Australia

October 11, 2022 By //  by Leigh Hogle

The Paralana Hot Springs in South Australia areisone of only a few active radioactive hot springs in the world. Not suitable for swimming, visitors can instead view the radioactive pools and enjoy the landscapes of the Flinders Ranges.

Far from the beaten path, the remoteness of the hot springs means that not many tourists know of their existence.

Certainly one of the more unique destinations in South Australia, those who do travel to the Paralana Hot Springs will journey through time. View the ancient geology of the rocks and creek, as well as the extremophile life forms living in the pools.

Toxic and Radioactive Hot Springs (no swimming)

Large Pool, Paralana Hot Springs, Arkaroola, South Australia
The Paralana Hot Springs in Arkaroola, South Australia. Photo by: Visible Procrastinations

Originally created by fractures in the rock and formed more than 1 billion years ago, the area around the springs dates back to the Proterozoic period (2.5 billion to 541 million years ago). The Paralana Hot Springs are the only remaining pools of water from the Paralana Fault’s hydrothermal system.

Water seeps from an underground aquifer beneath the surface and comes bubbling to the surface in the pools. Heated by granite rocks, high levels of uranium keep the water at a temperature of 134.6-143.6°F (57-62°C) as it goes through radioactive decay. Although radioactive, the water is not acidic and it is considered to have a neutral pH between 7 and 8.

Green Pool, Paralana Hot Springs, Arkaroola, South Australia
Green algae growing at the Paralana Hot Springs in South Australia. Photo by: brotherlywalks

Often, the pools at the Paralana Hot Springs can be seen bubbling. The bubbles contain radioactive radon gas, as well as carbon dioxide, nitrogen, and helium. The only life forms that have been able to survive in the pools are extremophile algae.

The green algae can be seen growing in the pools and it is suited to live in the extreme environment of the pools. Scientists consider the algae to be some of the earliest life forms and typical of what would have been living on earth during the Proterozoic period.

Historically, the pools were used as a health spa from 1926-1928. This was during a time when radioactivity was considered to be healthy. Now, scientists know that this is not the case and radioactivity is deadly.

Small Radioactive Pool, Paralana Hot Springs, Arkaroola, South Australia
A small radioactive pool at the Paralana Hot Springs in South Australia. Photo by: Visible Procrastinations

Visitors at the Paralana Hot Springs must take various precautions when staying in the area. The radon gas that bubbles to the surface is considered to be a health hazard. Heavier than air, the gas sits close to the ground and the surface of the water.

Tourists should not visit the Paralana Hot Springs on windy days because high winds can pick up and spread the deadly radon gas. Additionally, guests shouldn’t spend too long at the site because prolonged exposure to the mixture of gasses is a hazard to human health. Swimming, touching, or drinking the water at the Paralana Hot Spring is not permitted.

Nearby Camping and Lodging

Arkaroola Caravan Park, Arkaroola, South Australia
The Arkaroola Caravan Park in South Australia. Photo by: Arakroola Wilderness Sanctuary

There are no overnight accommodations at the Paralana Hot Springs. Camping overnight in the area is also not permitted because of the deadly radon gas that hovers on the surface of the water and around the pools. Instead, tourists can stay in the nearby village of Arkaroola.

The closest camping area to the Paralana Hot Springs is Arkaroola Caravan Park. Located 21 miles (33.7km) away from the hot springs, the caravan park is set on 300 hectares of land. There are 50 powered sites at the campground, as well as a few unpowered sites, a bunkhouse, and cabins.

Facilities at the Arkaroola Caravan Park include showers, toilets, coin-operated laundry facilities, camp kitchens, and an in-ground swimming pool. Swimming in the nearby water holes is not permitted because of the high saline content.

Lodging, Arkaroola Wilderness Sanctuary, Arkaroola, South Australia
The Arkaroola Wilderness Sanctuary in South Australia. Photo by: Booking.com

Tourists may also choose to stay at the Arkaroola Wilderness Sanctuary (affiliate link), which is 20.6 miles (33.2km) away from the Paralana Hot Springs and right next door to the Caravan Park. The Arkaroola Wilderness Sanctuary has a small shop, restaurant, bar, fuel supplies, and a swimming pool.

Guests staying at the sanctuary can sleep in cabins and bunkhouses.

Private Guest Room, Arkaroola Wilderness Sanctuary, Arakroola, South Australia
A guest room at the Arkaroola Wilderness Sanctuary in South Australia. Photo by: Booking.com

Getting There

The Paralana Hot Springs is located in the remote Outback of Southern Australia. Arkaroola Village is the closest community to the springs. Still, both Arkaroola Village and the hot springs are very secluded. Visitors should be prepared to travel to areas of Australia’s Outback where there is no water, food, or cell reception.

Roads in the area and going to the hot springs are all dirt. The main road leading to the springs is the Stubbs Waterhole Track. Most of the roadways are maintained around Arkaroola Village, but they can get quite rugged when heading to the hot springs. A 4WD vehicle will be required to get to the springs and around the Flinders Ranges.

Information Signs, Paralana Hot Springs, Arkaroola, South Australia
Signs for the Paralana Hot Springs in South Australia. Photo by: Visible Procrastinations

Details

Address: Arkaroola Rd, Arkaroola SA 5732, Australia

Coordinates: 30°10’30”S, 139°26’29”E

Season: Year-round (avoid visiting on windy days)

Age Restrictions: None

Pets: Not permitted

Entry: Free

Swimming: Not permitted, water is radioactive and deadly

Leigh Hogle

About Leigh Hogle

Leigh Hogle is a writer with an emphasis in travel, film, and product marketing. She is known for taking the road less traveled and also has a passion for animals, architecture, and photography.

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