Praia do Cassino (lit. Cassino Beach) is located adjacent to the city of Rio Grande, in the state of Rio Grande do Sul, Brazil. It is commonly known in Brazil as the longest beach in the world (approximately 254 km long), stretching from the Molhes (stone barrier built into the ocean separating the beach from the entrance to the Rio Grande seaport) in Cassino beach to nearly Chuí, on the border with Uruguay.
In 1966 27 sounding rockets were launced from Praia do Cassino [1]