This huge sinkhole, with steep vertical walls, has slowly developed into a green oasis - complete with a small waterfall. It is in the middle of the SA town of Mt Gambier.
@ankers70 Thanks for your nice comment Suzanne. It is amazing - but very difficult to get a photo that shows it very well! I loved the way that you find it through a little gate down one of the side streets - not even really signposted. :)
Beautiful capture. I like how it is being very well cared of. There is a sink hole like this on the other side of the island here but it has been left to its own devices and there is no way how you can get to the bottom.
@sangwann Hi Dione - the council has gone to quite a lot of bother to put in a series of steps and walkways that let you get to the bottom. It's worth the walk.
Thanks everyone for your interest in this place. A lot of people wondered how it came to form. A large section of this part of Australia is based on limestone. As water seeps down through soil and vegetation it becomes slightly acidic and starts to dissolve the limestone underneath. Huge sinkholes and caves can form - they can be found in many places but this one is quite famous and well established to allow people to get down into it. Fascinating to see. Thanks again for your interest. Cheers Rob @tinley23@onewing@carole_sandford@joansmor@fbailey@corinnec@wakelys@rensala@jgpittenger@shutterbug49@ludwigsdiana@fishers@ollyfran
Ian
@tinley23 @onewing @carole_sandford @joansmor @fbailey @corinnec @wakelys @rensala @jgpittenger @shutterbug49 @ludwigsdiana @fishers @ollyfran