The Limestone Coast's Little Blue Lake: A Natural Wonder and Tourist Hotspot
The Little Blue Lake, nestled in the southeast of South Australia near Mount Gambier, is more than just a swimming spot. It's a cenote, a water-filled sinkhole up to 47 meters deep, set among paddocks. While it's one of several cenotes in the region, its accessibility has made it a popular tourist destination and a significant contributor to the local economy.
An Ancient Wonder
Cave geologist Ian Lewis explains that the Little Blue Lake and the larger Blue Lake, formed in the crater of the Mount Gambier volcano, share a groundwater system but are distinct. The cenotes, he notes, are far older than the Blue Lake and the volcano, dating back approximately 5,000 years. Lewis estimates that these large sinkholes, including the Little Blue Lake, could be at least 100,000 years old, possibly even 300,000 years old or older, based on his preliminary findings.
The sinkholes around the Little Blue Lake are part of a ragged fault line running from Mount Schank towards Kongorong, providing pathways for groundwater to move and dissolve into gaps. However, Lewis suggests that these sinkholes may not have formed simultaneously.
The Perfect Natural Pool
The Little Blue Lake's large, round opening contributes to its popularity. Local mayor Kylie Boston describes it as a special and unique place for residents and visitors, comparable to a beach where you can drive up. The lake offers a refreshing natural waterhole that the community is fortunate to share with the public.
Swimmers, like Matt Wilson, who has seven children, appreciate the clean, beautiful, and deep water, providing a unique experience for families.
Tourists, too, are captivated by the Little Blue Lake. Kai Nelson, visiting from New South Wales, and Heather Joyce, from Melbourne, who discovered the lake on TikTok, were among those who expressed their delight in seeing the sinkholes for the first time.
A 'Rite of Passage', But Discouraged
While the Little Blue Lake offers a refreshing experience, it also presents risks. Swimmers must be cautious, as people frequently dive from the rocky cliffs above. Matt Wilson suggests that for kids, it's almost a rite of passage, but the local council, led by Boston, discourages this behavior. They recommend swimming in the waterhole rather than jumping from the cliffs to ensure safety and accessibility for all.
A cherished spot for locals, the Little Blue Lake holds fond memories. Boston recalls it as a place to cool off during hot tennis matches, providing a refreshing dip before returning to play doubles in the afternoon.
Lewis is consistently amazed by the community's love for the Little Blue Lake. During a hot January long weekend, he counted approximately 500 people, feeling proud and happy for the region's access to one of Australia's most remarkable waterholes.
