The Whispering Wall can be found in the pretty Barossa Reservoir region just outside of Williamstown.
Originally built to provide a back-up water supply to the nearby town of Gawler, it soon became something else entirely. Now, it rises the equivalent of nine storeys high – a height that, at one point, made it the tallest dam in the country. Today, it is a popular tourist attraction in the area, attracting people who want to experience it’s unique “whispering” ability.
The Music of the Whispering Wall
A lot of people who visit the wall say it speaks to them. This is because when one person whispers into one side of the dam, it can be heard right at the other end, which is almost 140 metres away. It’s easy for people to hold conversations, despite the hefty distance between them.
This feature is made possible by the parabola effect. This is where the wall forms one part of a perfect circle, which as a result causes soundwaves that hit it to jump to the other end. Basically, sound travels really well thanks to its unique shape.
Cache description,
You are looking for a small plastic tube (about 6cm long) with a screw lid, You will need to bring your own pencil/pen.
Please note
The cache is only avaliable between the hours of 8.30am - 5pm (standard time), 8.30am - 6pm (daylight saving time). Closed on Total Fire Ban Days