My favourite camping spot within about 1.5 hours from Adelaide would have to be Deep Creek Conservation Park. I have been there several times in the last year and done many of the bush walks along the Heysen trail and others.
With the purchase of a 4WD last week it enabled us on the weekend to check out Blowhole Beach which is at the end of a 4WD only track. While the track wouldn't be considered a challenging 4WD track it certainly was spectacular, as you come out the scrub down a steep descent with deep gullies on each side you find yourself about 400 metres above the ocean with spectacular views of Kangaroo Island as you drive around the bend there is a scenic lookout carpark where we stopped and took in the views of Kangaroo Island and Blowhole Beach. As we looked around we spotted kangaroos all through the scrub lazing in the shade of the small trees, then we spotted a pod of Dolphins cruising along the entrance to the cove.
We then jumped back in to the car and drove down to the Blowhole Beach carpark, from there you need to walk approximately 100 metres downhill to the beach.
Once on the beach we spotted a Kangaroo having a drink from the creek that isn't quite running into the sea at the moment. On Saturday it was 42 degrees at most places in South Australia and after the walk down I couldn't wait to go in the crystal clear waters. After I waded out to about waist deep water I couldn't believe how many fish were in the water just a metre in front of me, then I looked at one of the gently rolling waves coming toward me and the entire wave was made up of fish with the sun reflecting of their bodies, everywhere I looked the entire water was teaming with fish. Most of the fish appeared to be Tommy Ruffs about 20 cm in length but there were definately other species about as well but unfortunately I had no goggles to get a good look. While we were there a guy was casting out a lure and caught a silver whiting and a Salmon Trout.
Chatting to a few people at the beach they said that the snorkeling along the opening to the cove was great and some young fellows with snorkeling gear climbed over the rocks to the next cove which apparently is pretty good also. There were a few backpackers from overseas who said this was the best beach they had ever been to. While I'm not sure if this is the best beach I've ever been to, I would have to rate it in the top 5 in South Australia and liked it so much I'm going back for more this weekend but this time with my fishing rod and some snorkelling gear.
Here's a picture of the Blowhole Beach:
This picture shows Kangaroo Island in the background: