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Iona Island (New York)
Iona Island is a 556-acre (2.2 km²) bedrock island, part of the Hudson River nature reserve in the town of Stony Point, New York, about one mile south of the Bear Mountain Bridge. It is part of Bear Mountain State Park. The island is separated from the Hudson's western shore by mudflats and freshwater tidal marshes. It and its surrounding marsh were designated a National Natural Landmark in May 1974〔(NPS NNL Summary ) 〕 as well as the Hudson River National Estuarine Research Reserve and a "Significant Coastal Fish and Wildlife Habitat Area".〔("Hudson River National Estuarine Research Reserve", New York State Department of Environmental Conservation )〕 It serves mainly as a bird sanctuary, particularly known as a winter nesting place for bald eagles.〔("Iona Island", Audubon Society )〕
==Geography==
Iona Island is transected by active railroad tracks, but is accessible to the public only by a causeway connecting it to U.S. Route 9W in Bear Mountain State Park, near Doodletown. It is maintained by the Palisades Interstate Park Commission.
The southeastern part of the island, once cut off by marshes, is known as Round Island. It was attached to the south end of Iona Island with fill in the early 20th century. The hill on the western side, south of the causeway, was also once treated as separate, and referred to as Courtland Island. Snake Hole Creek originates in the low marshes towards the center of the island and flows southwesterly, then turning to the southeast and finally east in a long crescent to reach the Hudson. It separates the marshes of Salisbury Meadow, on the west side, from Ring Meadow, on the east side.
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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