In 1974 it was decided to build a lighthouse on a spur of Punta Roncadoira, 80 m above sea level, to link the lighthouses of Estaca de Bares and San Cipri??n. It came to replace the lights of the Punta del Faro and Socastro, only visible inside the Viveiro estuary. In the first one, formerly, fires were lit sporadically to signal the entrance of the estuary. It entered into service in 1984, provisionally, and definitively, in 1986. It's characteristic of isolated flashes every 7.5" is provided by a rotating mirror of 12 reflectors containing 8 halogen lamps, and 4 reserve incandescent lamps.