Three teenagers were safely rescued after becoming lost in the Onkaparinga River National Park in Adelaide’s south, prompting a coordinated land and air search by South Australia Police.

The group—aged 15, 17 and 19—were reported missing on Sunday evening, 5 July 2026, after failing to return from a walk on the Sundew Track, a bushwalking route known for its steep terrain and rugged river valley conditions.

Police said they were alerted just after 7:00pm, triggering an immediate response due to fading daylight and the difficult terrain within the park. The police helicopter (Pol Air) was deployed to assist in the search, scanning the dense bushland and river system from above while ground patrols prepared to enter on foot.

Around 7:20pm, the helicopter located the teenagers deep within the park. Southern District police officers then moved into the area on foot, navigating steep slopes, uneven ground and knee-deep water along sections of the river system to reach the stranded group.

Officers escorted all three teenagers back to safety. Fortunately, none of them were injured during the incident.

Authorities said the rescue highlights how quickly conditions in natural areas can become hazardous, particularly in winter months when daylight hours are shorter and temperatures drop rapidly after sunset. Police noted that even familiar walking tracks can become disorienting once visibility decreases.

Following the incident, South Australia Police reminded hikers and visitors to take extra precautions when exploring national parks. This includes planning walks to ensure completion before dark, carrying sufficient food and water, sticking to marked trails, and informing others of intended routes and expected return times.

Police also emphasised the importance of remaining in one place and calling emergency services (Triple Zero – 000) if lost, rather than attempting to navigate unfamiliar terrain in low light conditions.

Onkaparinga River National Park, located about 30–40 kilometres south of Adelaide, is a popular destination for bushwalkers, featuring deep river gorges, cliffs, and wetlands. However, its terrain can be challenging, especially for inexperienced hikers or those unfamiliar with rapidly changing weather and lighting conditions.

The successful rescue was credited to quick reporting, coordinated aerial support, and the ability of ground officers to traverse difficult terrain in time-sensitive conditions.

Authorities say the incident serves as a reminder that even short hikes in natural areas require preparation and awareness of environmental risks.