If you have been to the Port Campbell National Park on land, you would have probably taken a look at The Blowhole. It has a thrust of water that stupefies the mind rushing into it. The thrust crashes into rock and reef and ends up wetting all spectators. The Blowhole is the result of constant erosion of the sea against the limestone cliffs, along with the seepage of surface rain water cutting through the limestone cliffs which have caused it to cave in over the tunnel that the ocean has been carving. The Blowhole is particularly loud, as one can hear the waves churn through the chamber of the blowhole and resonate against its limestone walls. Of course, if that is happening you can't dive this site.
When you are on the millpond (which happens about three times a year in this area) find a crack in the cliff near where The Blowhole is situated, jump in, have a look around, then, if it is safe to do so, head into the cave entrance.
Swim on the surface or on the bottom through the chasm. You will see where all the big crayfish come from as the entire wall of the chasm is covered with baby crayfish just waiting to get out into open water. Move up the cave and into the main area of The Blowhole. Expect some dumb looks from tourists. Now... the best and most amazing bit.
If you carry on north-east and into the opposite end of the blowhole you will enter a cavern that is at least 50 metres long, 40 metres wide, and 20 metres high. Dependent on the tide you can swim under a rock and end up in a totally sealed off room. It has a small beach you can get up on an take you gear off and feel like Jules Verne for a while... quite exciting and not many people have been here. A great dive and a great experience.
Dive Type: Reef Dive
Imported from The Scuba Doctor