Unidentified hexagonal structures at Fiery Cross, Subi, and Mischief reefs.CSIS/AMTI/Digital Globe/Amanda Macias/Business Insider
In addition to China’s lightning-fast construction of military aircraft hangars on reefs in the South China Sea, mysterious facilities have also emerged.
Satellite imagery published by the Asia Maritime Transparency Initiative (AMTI), a unit of the Center for Strategic and International Studies, shows several unidentified hexagonal structures on Fiery Cross, Subi, and Mischief reefs.
http://www.businessinsider.com/csis-satellite-hexagonal-south-china-sea-2016-8