The island is a place of exceptional beauty, with its long
uninterrupted white beaches flanked by strikingly coloured sand
cliffs, its majestic tall rainforests and numerous freshwater
lakes of crystal clear waters. The massive sand deposits that
make up the island are a continuous record of climatic and sea
level changes over the past 700 000 years.
Fraser Island features complex dune systems that are still
evolving, and an array of dune lakes that is exceptional in its
number, diversity and age. The highest dunes on the island reach up to 240 metres above
sea level. Forty perched dune lakes, half the number of such
lakes in the world, can be found on the island. These lakes are
formed when organic matter, such as leaves, bark and dead
plants, gradually build up and harden in depressions created by
the wind.
The island also has several barrage lakes, formed when moving sand dunes
block a watercourse, and 'window' lakes, formed when a depression exposes
part of the regional water table. A surprising variety of vegetation types grow on the island, ranging from
coastal heath to subtropical rainforests. It is the only place in the world
where tall rainforests are found growing on sand dunes at elevations of over
200 metres.
The low 'wallum' heaths on the island are of particular evolutionary and
ecological significance, providing magnificent wildflower displays in spring
and summer.
Birds are the most abundant form of animal life on the island with over
350 species being recorded. It is a particularly important site for
migratory wading birds which use the area as a resting place during their
long flights between southern Australia and their breeding grounds in
Siberia.
A species of particular interest is the endangered ground parrot,
which is found in the wallum heath lands.
Few mammal species are present on the island. The most common are
bats, particularly flying foxes. The dingo population on the island
is regarded as the most pure strain of dingoes remaining in eastern
Australia.
The lakes on Fraser Island are poor habitats for fish and other aquatic
species because of the purity, acidity and low nutrient levels of the water.
Some frog species are adapted to survive in this difficult environment.
Appropriately called 'acid frogs', they tolerate the acidic condition
characteristic of the Fraser Island lakes and swamps
Called K'gari by its Aboriginal inhabitants, the island reveals
Aboriginal occupation of at least 5000 years, although it is possible that
further archaeological work may indicate earlier occupation. Early European
reports suggested that Fraser Island was heavily populated by Aboriginal
people, but subsequent research indicates that there was a small permanent
population of 400-600 that swelled seasonally to perhaps 2000-3000 in the
winter months when seafood resources were particularly abundant. Fraser
Island contains many sites of archaeological, social and spiritual
significance. Middens, artefacts scatters, fish traps, scarred trees and
campsites bear witness to the lives of the original inhabitants.
European contact, initiated by Matthew Flinders in 1802, was
sporadic and limited to explorers, escaped convicts and shipwreck
survivors.