On September 4, 1971, the Costa Rican National Geographic Institute was taking aerial photos from 10,000 feet of Lake Cote, the small body of water that would later become the larger Lake Arenal, as part of preliminary studies for the future hydroelectric project. The study was funded by the Costa Rican Electricity Institute (ICE) to determine water sources in the area for their planned hydroelectric project. Photographer Sergio Loaiza, along with Costa Ricans Juan Bravo and Francisco Reyes,...