Apo Reef Light control of the Philippines, all the Spanish plans and records were turned over to the United States. In 1903, the Bureau of Lighthouse Construction proposed to continue the construction of the third-order light on Bajo Apo Island. The tower was found in excellent condition at the warehouse by the Americans together with the tower for Capitancillo Islet in Bogo City, Cebu. A survey party was sent to the station in November 1903 for the topographical surveying of the Island as no work has ever been attempted yet by the Spaniards on this station—unlike in Tanguingui Island or Capitancillo Island where
Mount Apo in Mt. Apo Natural Park. This waterfall flows into the Sibulan River, which flows to the Davao Gulf. Grasslands – The grasslands are characterized by the dominance of Cogon grass ("Imperata cylindrica") and "Saccharum spontaneum". Other grasses and ferns also thrive, especially along banks of creeks, streams, and rivers and on steep slopes. The Mt. Apo 1 and Mt. Apo 2 geothermal plants, each possess a rated capacity of 54.24 megawatts. Owned and operated by Energy Development Corporation (EDC) the power plants were commissioned in February 1997 (Mt. Apo 1) and June 1999 (Mt. Apo 2) respectively, under a build-operate