Round Island Passage Light
Round Island Passage Light, Lighthouse in Mackinac County, United States
The Round Island Passage Light stands 18 meters tall with an octagonal steel tower mounted on a concrete platform supported by a timber crib foundation.
The lighthouse began operating in 1948 to guide vessels through the Round Island Channel after construction plans were delayed by World War II.
Bronze Indian head reliefs decorate each side of the five-story tower, representing the Native American heritage of the Mackinac Island region.
The lighthouse remains operational with automated systems, including a fog signal horn that activates every 30 seconds when requested by passing vessels.
The structure contains internal cells filled with specific rock sizes ranging from 5 to 14 inches, providing stability in the waters of Lake Huron.
Location: Mackinac County
Inception: 1947
Height: 18 m
Made from material: reinforced concrete, box crib
GPS coordinates: 45.84330,-84.61500
Latest update: March 14, 2025 02:02
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