The walk, which passes by the remains of early logging camps, becomes increasingly easier as you follow old forestry trails through open forest and heath land.

BBC: Hiking Australia��s Fraser Island

Forest fragmentation opens the door to invasive species such as the cowbird, a type of blackbird that normally prefers open land, said Bridget Stutchbury, a biologist at York University in Toronto who studies forest songbirds.

WSJ: Northeast drilling boom threatens forest wildlife

Twenty acres of land come with it, but windows in the southwest turret open onto 2 million acres of national forest.

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