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Haystack Island
Haystack Island is an island located in Investigator Strait off the south coast of Yorke Peninsula in South Australia about south-west of Stenhouse Bay. Since 1972, it has been part of the Althorpe Islands Conservation Park.
== Description ==
Haystack Island is about south-west of Stenhouse Bay. It is described as ‘a narrow wall of sheer cliffs, undermined, indented and marked by fresh scars and rockfalls’ and that ‘has been eroded to a series of tall lobes connected by thin necks of rock that narrow to an almost knife-edge ridge’. It is suurounded by a ‘fringing wave-cut reef’. The island is about long by a maximum width of about and with the tallest lobe having a height of . Its long axis is aligned in a north-west to south-east direction.〔
Access is reported as best done in calm seas and that the summit ridge can be reached from the island’s east coast via a rubble cone of rubble, taking care when climbing the slope’s ‘loose and crumbling’ surface. A survey carried out in 1982 by the responsible government agency used a helicopter to access the island’s summit.〔〔
A number of sources consider Haystack Island along with the Althorpe Islands and Seal Island to be a group of islands known as the Althorpe Islands Group. 〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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