In 1908 about 10 acres (4.0 ha) were set aside for the United States Coast Guard to build a house for a keeper. At the request of William Tufts Brigham of the Bishop Museum, care was taken not to destroy the archaeological site. In 1929 a steel tower was built for the light, and in 1972 a new 32 foot (10m) concrete tower with solar power.[12][13]