Ojibway Fire Tower in Isle Royale National Park stands where the Greenstone Ridge and Mount Ojibway trails meet and reflects the park’s changing approach to fire detection and environmental monitoring. After the destructive Greenstone Ridge Fire of 1936, the National Park Service built a wooden tower on Mount Ojibway in 1939. That structure deteriorated, was removed in 1963, and the present steel lookout tower with living quarters was built in 1964–1965. Its staffed service was short, ending as fire management changed by 1968. It was later adapted as the island’s radio repeater station, and in 1987 gained equipment to monitor air pollution.