About Whispering Wall
The Whispering Wall is the retaining wall of the Barossa Reservoir near Williamstown in the Barossa region of South Australia, about 60 km northeast of Adelaide. Completed in 1903, the 144-metre-long curved concrete dam wall is famous for its acoustic effect where whispers at one end are clearly heard at the other. Set within Barossa Reservoir Reserve, it combines engineering heritage, scenic reservoir views and picnic grounds.
Visitors guide
Visitors can walk along the top and base of the curved dam wall to experience the acoustic phenomenon, view the Barossa Reservoir and surrounding bushland, and use the reserve's picnic areas, lawns and walking trails. The site includes interpretive signage about the dam's construction, car parking, toilets and lookout points over the water. The wall itself is accessed via steps and paved paths.
Key highlights
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Famous acoustic effect where a whisper at one end of the 144m wall is audible at the opposite end
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Historic Barossa Reservoir dam wall completed in 1903, an early example of thin-arch concrete dam engineering
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Scenic views over Barossa Reservoir and surrounding bushland
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Barossa Reservoir Reserve with picnic areas, barbecues and walking trails
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Interpretive signage explaining construction history and engineering
History of Whispering Wall
Barossa Reservoir was constructed between 1899 and 1903 to supply water to the northern suburbs of Adelaide and the Gawler area. Its retaining wall was an innovative thin concrete arch dam at the time, 36 metres high and 144 metres long, and was noted for its engineering design. The acoustic property was discovered soon after completion and has made it a well-known visitor attraction for over a century.
Culture & Context
The Whispering Wall is a recognised engineering heritage site and a long-standing recreational and tourism landmark for the Barossa region, valued for its unique acoustic phenomenon and as a community picnic and sightseeing destination.
Route
| By air |
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