Manakkodam Lighthouse is situated next to the Andhakaranazhy beach in the Alappuzha district of Kerala near Cherthala. The tower is a 33.8 metres (110.9 ft) high concrete structure with square cross section. It was inaugurated on 1 August 1979. There were no lights in this area before 1979. The light source was changed from incandescent lamp to metal halide on 21 September 1998. The light source flashes twice in ten seconds.