Australia
First get yourself to Hervey Bay on the Queensland coast. Just off the coast is Fraser Island, a sandy, 90-mile long island covered with rain forests and dotted with paradisal lakes.
There are a number of rental places on the main drag on the edge of town on the mainland where you can rent a four-wheel drive car complete with full camping kit. You will usually be shown a short video about off-road driving - pay attention, as the island is crossed by narrow tracks composed of very soft sand which take some getting used to.
A short ferry ride later and you are there. Cross the island to the east side, where you'll find 70-mile Beach. As the name suggests, this is a long beach; at low tide, it becomes a 100-metre wide road along which you can drive the length of the island, stopping off at various points to explore the rain forest or lakes.
In the evening, you can pull off the beach through a break in the dunes to camp under the stars, miles from anyone else and as close to nature as you can get (but still with the security blanket of a four-wheel drive, tent, cooker and whatever provisions you picked up from the supermarket in Hervey Bay).
We spent several weeks in Australia a couple of years ago and, although we are relatively seasoned travellers, Fraser Island is one of our favourite memories and places in the world.
Get to Hervey Bay, Queensland -it's three hours north of Brisbane off the Bruce highway. Head to the point to catch the ferry to the island.
This is basically a sand dune on top of a cliff. It is amazing.
Drive up to the water tower at the top of the hill over the town and take the short walk through the forest.
Dolphins come into Tin Can Bay each morning between 7am and 10am. They have been coming for about 4 generations now and are only fed 1/10th of their daily diet so that if the feeding stopped for any reason they would not be affected by it. You get into the water with the dolphins and it takes a fish from your hand. A truely magical and memorable experience.
The boat ramp, Tin Can Bay
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