Pedra do Telégrafo is located in Pedra Branca State Park, in Barra de Guaratiba, and is 354 meters high. The stone served as the base for a military submarine observation detachment during the Second World War and today it is much sought after for its beautiful viewpoints. From up there, you can see the wild beaches of Rio de Janeiro, such as Praia do Meio, Funda, Grumari, as well as Recreio, Barra da Tijuca and Pedra da Gávea. On the other side, a magnificent view of Restinga da Marambaia and the mangrove complete the scenery.