page_title: Thunder Bay Island Light
hierarchical_section_title: Thunder Bay Island Light
caption_attribution_description: English: Undated image of Thunder Bay Island Light
context_page_description: Thunder Bay Island Light, located on Thunder Bay Island's southeast tip, is one of the oldest operating lighthouses in Michigan. The third operating U.S. lighthouse in Lake Huron was built here in 1831, but it disintegrated almost at once and was rebuilt in 1832 of local limestone. This 40-foot 1830s light tower was raised 10 feet to a height of 50 feet in 1857, and sheathed with brick. A fourth order Fresnel lens was installed. This 1857 light tower is the current Thunder Bay Island Light, although the tower has been further altered and is currently 63 feet high.
  A fog bell was installed in 1858, and the lightkeeper's house was rebuilt in 1868. A steam-powered fog horn was added in 1871, and a fog signal building sheltering the fog signal apparatus was constructed in 1892.
  The lighthouse was manned during the seasons of Great Lakes navigation from 1832 until automation in 1983, more than 150 years.
context_section_description: Thunder Bay Island Light, located on Thunder Bay Island's southeast tip, is one of the oldest operating lighthouses in Michigan.  The third operating U.S. lighthouse in Lake Huron was built here in 1831, but it disintegrated almost at once and was rebuilt in 1832 of local limestone.  This 40-foot (12 m) 1830s light tower was raised 10 feet (3.0 m)) to a height of 50 feet (15 m) in 1857, and sheathed with brick.  A fourth order Fresnel lens was installed.   This 1857 light tower is the current Thunder Bay Island Light, although the tower has been further altered and is currently 63 feet (19 m) high.
  A fog bell was installed in 1858, and the lightkeeper's house was rebuilt in 1868.  A steam-powered fog horn was added in 1871, and a fog signal building sheltering the fog signal apparatus was constructed in 1892.
  The lighthouse was manned during the seasons of Great Lakes navigation from 1832 until automation in 1983, more than 150 years.
caption: Thunder Bay Island Light' undated USCG
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