K'gari (Fraser Island)

K'gari, long known as Fraser Island, off the southern Queensland coast, is the largest sand island in the world and a World Heritage Site, a place that overturns expectations of what sand can support. Improbably, tall rainforest grows straight out of the dunes, nourished by fungi in the sand, and the island holds dozens of freshwater lakes, some perched high in the dunes with water of startling clarity, ringed by white sand, of which Lake McKenzie is the most beautiful. There are no sealed roads: you explore by four-wheel-drive along sandy inland tracks and, at low tide, along the vast Seventy-Five Mile Beach, which doubles as a highway and an airstrip, past a rusting shipwreck and coloured sand cliffs. The island is home to dingoes considered among the purest in Australia, and its waters see migrating whales in season. It is a wild, sandy, forested world with its own rules.

What you actually see

• Lake McKenzie - the perched freshwater lake with pure white sand and clear water.
• The rainforest on sand - tall forest growing improbably from the dunes.
• Seventy-Five Mile Beach - the ocean beach driven as a road, with the Maheno shipwreck.
• The dingoes and whales - the island's wild dingoes and the migrating whales offshore.

When to go

The island is a year-round destination; August to October adds migrating humpback whales in the bay. Summer is hot and humid with the chance of storms. Driving depends on the tides, as the beach highway is only usable around low tide, so plan around the tide tables whenever you go.

Honest expectations

Getting around means four-wheel-drive on soft sand and tidal beaches, which is genuinely challenging and where inexperienced drivers get bogged or into trouble, so either take a tour or be confident and prepared. The dingoes are wild predators that have attacked people, so strict rules on food and distance must be followed, especially with children. The ocean beach has dangerous currents and sharks and is not for swimming; stick to the lakes. Permits are required.

Nearby

Hervey Bay, a whale-watching centre, and Rainbow Beach are the mainland gateways; the Great Barrier Reef lies further north.