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}} The Grand Island Harbor Rear Range Light is a lighthouse located off M-28 in Munising Township, Michigan. It is also known as the Bay Furnace Rear Range Light, Christmas Rear Range Light,〔()〕 or End of the Road Light.〔()〕 The corresponding front range light was replaced in 1968; the rear range light was listed on the National Register of Historic Places in 1990.〔 It is no longer an active aid to navigation. The grounds only are publicly accessible, but a hike is required.〔(Publicly accessible lights in Michigan, National Park System, Maritime Heritage Project. )〕 == History == The Grand Island Range Lights were lit first in 1868. The original front range light was a wooden pyramid that held a sixth-order Fresnel lens.〔 The original rear range light was a sixth-order Fresnel lens in a wooden tower atop a frame keeper's house,〔(Grand Island Range Lights ) from "Seeing the Light," Terry Pepper, retrieved 1/1/10〕 to the rear of the front range light.〔 By 1914, these original frame structures were severely rotted, and both were replaced〔 as part of a broader effort of replacing nearly all harbor lights with steel-framed structures.〔 The new front range light was a iron mast.〔 A new automated〔 rear range light was installed to the rear of the front range light.〔 The new rear range light was a tower, the upper half (painted white)〔(GRAND ISLAND HARBOR RANGE LIGHTS ) from the US Forest Service〕 of which was part of a tower originally located at the Vidal Shoals.〔 near Sault Ste. Marie.〔 In 1939, the sixth-order Fresnel lenses were replaced with 350 millimeter glass lenses, which still used acetylene gas.〔 In 1968, the front range light was replaced with a "D9" style tubular steel structure;〔 in 1969 the lights were deactivated.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Grand Island Harbor Rear Range Light」の詳細全文を読む スポンサード リンク
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