Australia is the ultimate backdrop for mysteries, with its untamed wilderness, rugged landscapes, and vast, untouched expanses. These remote areas provide the perfect setting for disappearances, blending romance, beauty, and an undeniable sense of eeriness.
10. The Legend of Lasseter’s Reef

Lewis Lasseter, born in Victoria in 1880, led a seemingly ordinary life as a jack-of-all-trades—working as a maintenance worker, writer, inventor, and carpenter. He often clashed with local authorities, married a nurse, and was discharged from the Australian Imperial Force due to poor health.
In 1929, Lasseter proposed a bold plan to the Australian government. He aimed to survey a 1,280-kilometer (800 mi) stretch of the Outback to map a pipeline route, intending to transport water from the Gascoyne River to a massive quartz reef he allegedly discovered. He claimed the reef contained at least £5 million in gold and sought financial backing to fund his expedition.
Lasseter asserted he had discovered the gold reef 33 years prior to presenting his plan. Despite being denied government funding, he secured private backers and led an expedition into the Outback in 1930. The journey was fraught with disaster—horses perished, camels fled, conflicts arose among the team, and accidents were frequent. Most members abandoned the mission by year’s end, convinced the gold reef was a myth. Lasseter pressed on with one companion but was eventually stranded in the desert after a dispute and met his end there.
What was Lasseter’s true motive? The answer remains unclear. Some believe he was delusional and had never ventured into that region of Australia. Others argue he was financially desperate and concocted the story as a final attempt to strike gold.
However, many are convinced the gold reef exists, pointing to a map Lasseter allegedly drew in his diary. Using Google Earth, treasure hunters worldwide are attempting to align his descriptions with the central Australian landscape. Despite numerous expeditions into the desert, the gold reef remains undiscovered.
Or, if it has been found, those who know are keeping it a secret.
9. The Wanda Beach Murders

In January 1965, two 15-year-old girls were violently attacked and killed on Wanda Beach in Australia. Over the following year, several other assaults on women occurred in the vicinity. However, these cases were never definitively connected, and all of them remain unsolved.
On that fateful day in 1965, Christine Sharrock and Marianne Schmidt, both teenagers, were sexually assaulted, stabbed, and struck with a blunt weapon. The crime shocked the community, leading to over 14,000 interviews and 5,000 persons of interest being considered during the investigation. Despite the extensive efforts, no one was ever arrested.
There was no lack of suspects. Some investigators theorized that the girls were killed by Derek Percy, one of Australia’s most infamous criminals and a convicted murderer. Another prime suspect was Christopher Wilder, a serial killer who later fled to the United States, where he was convicted of kidnapping, murder, and rape after admitting guilt in a Sydney Beach gang rape case in 1962.
Today, it appears highly improbable that anyone will ever be convicted of the murders, particularly since a crucial piece of evidence has gone missing. Shortly after the crime, male DNA was discovered on the victims, almost certainly belonging to the killer. However, when Derek Percy died in 2013 and efforts were made to match his DNA to the killer’s, investigators discovered that the DNA evidence from the case had disappeared from the Glebe forensics lab.
8. Jean-Francois De Galaup De La Perouse

Born in France in 1741, La Perouse fought in the Seven Years War and the American War for Independence before embarking on explorations of the Pacific, reaching as far as Russia’s eastern coast. In 1785, he was personally selected by the French government to lead a scientific expedition across the Pacific, aiming to expand on the discoveries made by the renowned Captain Cook.
During the four-year voyage, La Perouse visited Easter Island, California, southern China, Japan, and Korea. By 1789, he had arrived in Australia and sent word to France that he was preparing to return home. His expedition then set course for New Caledonia, located off Australia’s east coast—and vanished without a trace.
A hint about his possible fate emerged when a ship captain found that natives on Vanikoro Island possessed distinctly European objects, such as copper, cannons, and candlesticks. One unverified theory suggests La Perouse’s ships wrecked on the island’s coral reef. The hostile locals may have driven the survivors to build a small fort. After a short stay, the Europeans reportedly constructed a boat and departed.
7. The Mystery of Australia’s Megafauna

In ancient times, colossal creatures known as megafauna thrived across the globe—woolly mammoths and saber-toothed cats being the most famous. While many theories explain their extinction, Australia’s case stands out as unique.
Australia’s megafauna were truly gigantic. Among them was Diprotodon, the largest marsupial ever, a clumsy and massive creature. Another was Palorchestes, a long-necked marsupial resembling a mix between a giant anteater and a cat. The Haast’s eagle was so large it could prey on humans. There were also wombats as big as rhinos and lizards stretching the length of a bus.
And then, they vanished.
Fossil evidence indicates that Australia’s megafauna largely disappeared around 13,000 years ago. This timing coincides closely with the arrival of humans on the continent, leading some to argue that human activity caused their extinction. However, others find it improbable that small, scattered human groups could eradicate entire species of megafauna, proposing instead that climate change was the primary culprit.
The mystery deepens when considering that other continents retained many large animals, such as elk, bears, elephants, and big cats. While not as massive as ancient megafauna, these creatures are still sizable. In contrast, Australia’s largest remaining native species is the red kangaroo, with males standing up to 1.5 meters (5.3 ft) tall and weighing around 90 kilograms (200 lb). This raises the question of why Australia lacks the giant creatures found elsewhere in the world.
6. The Mystery of Ned Kelly’s Skull

Ned Kelly is an enduring Australian legend. Born in Tipperary, Ireland, he was transported to Australia for pig theft, served his sentence, and remained there. Accusations of horse and cattle theft deepened the Kelly family’s animosity toward law enforcement, escalating their conflicts with the police to murder. Kelly was executed by hanging at Melbourne Jail on November 11, 1880.
Initially buried in the jail’s cemetery, his remains were exhumed and relocated in 1929. It’s believed his skull disappeared around this time, and its fate remains a mystery. One account suggests the skull was moved with his other bones but was later dug up, used as a paperweight, and stolen again in the late 1970s.
According to this theory, the skull eventually ended up with a farmer, who stored it in a Tupperware container by a riverbank before returning it in 2009. However, DNA analysis has since debunked this claim, confirming the skull does not belong to Ned. A New Zealand witch now asserts that one of the skulls in her extensive collection is Ned’s. Other theories suggest the skull was taken by a phrenologist present at his autopsy or given a proper burial by a Catholic clergyman. While theories abound, the true whereabouts of Ned Kelly’s skull remain unknown.
5. The Mystery of Dan Kelly’s Fate

When authorities pursued Ned Kelly, his brother Dan was quick to join him in the outback. Alongside Steve Hart and Joe Byrne, Dan became a central figure in the infamous Kelly Gang. The gang’s downfall came during a dramatic shoot-out at a Glenrowan hotel, where they wore homemade metal armor. Ned was captured after being shot in the legs, Joe Byrne was fatally wounded, and Dan Kelly and Steve Hart were found dead inside the hotel after a fire. The official account remains unclear—whether they were killed by police or took their own lives is still debated.
However, some believe Dan Kelly survived the shoot-out, suggesting the recovered bodies were innocent bystanders caught in the fire. Although a Kelly sister identified one body as Dan based on his distinctive teeth, Ned Kelly later implied there was no definitive proof his brother had died.
In 1933, a man named James Ryan approached a newspaper, claiming to be Dan Kelly. He alleged he escaped the fire, recovered from his burns, and eventually settled in a Queensland hut. His story gained widespread attention, and those familiar with the Kelly family couldn’t disprove his claims. For decades, Ryan maintained his innocence regarding the horse theft charges that initially sparked the family’s troubles, stating he came forward to clear his brother’s name, believing the statute of limitations had expired.
Ryan passed away on July 29, 1948, still adamant that he was the real Dan Kelly.
4. The Case of Bertha Schippan

On January 1, 1902, 14-year-old Bertha Schippan was viciously murdered. Over a century later, her case remains one of Australia’s most perplexing unsolved crimes.
With their parents visiting relatives, Bertha and her brothers were left in the care of their 25-year-old sister, Mary. Mary claimed she was awakened when Bertha’s body fell onto her during the night. Panicked, she woke her brothers, who sought help after nearby neighbors refused to assist. Bertha had been savagely killed, her throat slit five times.
Mary was eventually tried for her sister’s murder, though the evidence against her was largely circumstantial. Dried blood on her clothes was explained by her family as residue from helping slaughter sheep before the murder. Prosecutors argued that Mary washing her hair was proof of guilt, suggesting she was removing blood.
Mary’s alleged motive stemmed from her relationship with Gustave Nitschke. It was theorized that Bertha discovered the affair and threatened to expose it to their parents. Nitschke admitted to the relationship in court (with the audience removed to avoid scandal), tarnishing Mary’s reputation in the process.
As the trial progressed, public sympathy for Mary grew, and the courtroom burst into cheers when the jury declared her not guilty. The mystery of Bertha’s murder remains unsolved to this day.
3. The Disappearance of Juanita Nielsen

Juanita Nielsen vanished in 1975. Although two individuals were convicted for a failed kidnapping attempt, her disappearance was never solved, and no one was ever tried for it.
Nielsen was a prominent young activist in Australia. A fashion boutique owner, model, journalist, and trendsetter, she passionately fought to preserve the historic districts of Sydney’s Kings Cross neighborhood from demolition to make way for modern developments.
On July 4, 1975, Nielsen was last spotted at the Carousel, a somewhat dubious nightclub, where she was discussing advertising opportunities for her local magazine. Many believe she was singled out by the developers opposing her campaign efforts.
Eddie Trigg, a former Carousel employee and a prime suspect in Nielsen’s murder, died in 2013. As the final individual to have seen Juanita before her disappearance, it’s probable that he carried the truth of her vanishing to his grave. There were whispers of Trigg penning a revealing book, but it remains undiscovered, much like Nielsen herself.
A memorial cross honoring her is placed in the family section of South Head Cemetery in Vaucluse.
2. The Mysterious Wonnangatta Murders

In the 1850s, amidst the gold rush, the Wonnangatta cattle station stood as one of Australia’s most isolated outposts. By 1914, the original owners had left, and new proprietors assigned James Barclay to oversee the station. Despite its solitude, Barclay appeared unfazed, having already endured the loss of his wife to tuberculosis.
Barclay later employed John Bamford as a cook. Bamford, known for his volatile and fiery temperament, raised concerns among those who warned Barclay about his decision. Initially, things ran smoothly at the station. However, as the new year approached, both men vanished, alarming nearby residents. A search uncovered Barclay’s body, hastily buried after being shot in the back. While it seemed Bamford was the culprit, his own body was later discovered a few miles away, shot in the head.
Adding to the enigma, detectives from Melbourne stumbled upon a shocking find during their investigation. After a lengthy journey to the crime scene, they attempted to prepare a meal, only to notice the food turning an odd hue. Upon inspection, they realized a jar labeled “pepper” was filled with strychnine.
The fate of the two men remains a mystery, as does the reason behind the poisoned pepper. Speculations include encounters with cattle rustlers or a jealous spouse, yet no conclusive evidence has ever surfaced.
1. The Madagascar

Under the command of Captain Fortescue Harris, the Madagascar set sail from Melbourne in 1853, bound for England with a cargo that included over three tons of gold. Despite numerous claims, the ship vanished without a trace and was never sighted again.
The Madagascar was scheduled to make a stop at Cape Horn but never reached its destination, disappearing somewhere between Australia and Africa’s southern tip. Beyond this, few solid leads have emerged.
It’s believed that the ship carried a number of dubious individuals. The captain had replaced several crew members who left for the gold rush, recruiting a new team that included two infamous bushrangers, who were arrested before departure. A leading theory suggests a mutiny occurred, leading to the ship’s seizure. But what happened next? Was it diverted, looted, attacked by pirates, wrecked, or stranded? The fate of the Madagascar remains a tantalizing mystery for treasure seekers.
